The ShakeAlert earthquake early warning system has been rapidly expanding since its launch in 2021. Now, researchers at 91±ŹÁÏ affiliated Pacific Northwest Seismic Network (PNSN) have finished all planned installations, bringing the two-state total to spread across Washington and Oregon.

ShakeAlert detects ground motion from earthquakes before it is felt, giving people precious time to drop, cover and hold on. An earthquake exceeding magnitude 5 will trigger an automated cell phone alert from the , or WEA, which also sends AMBER alerts. Millions of people benefit from the network as is, but the researchers are still exploring ways to improve it.

“When we launched ShakeAlert, we felt confident that we had enough seismic stations to do a good job with early warning, but that wasn’t the optimal number. Now, with the buildout complete, we have coverage where it was lacking at launch,” said , director of PNSN and a 91±ŹÁÏ professor in Earth and space sciences.

However, expanding the network to include sensors on the ocean floor could help Pacific Northwest residents contend with the area’s greatest hazard — the Cascadia Subduction Zone.

The West Coast is a hotbed for seismic activity. Nestled in the , an array of volcanoes circling the Pacific Ocean where 90% of Earth’s quakes occur, the region’s volatile geology clashes with its growing population. Early warning systems can give people seconds to minutes of time to prepare for shaking, and a sense of how strong it will be.

Just over a year ago, a midsized earthquake under Orcas Island offered ShakeAlert in Washington. Multiple seismometers in the area picked up the signal and ran it back to headquarters for verification. The earthquake wasn’t quite big enough to trigger a WEA automated alert, or cause major damage, but in the affected region it did notify peopleÌęwith early warning apps such as MyShake, as well as all Android mobile devices.

“The system detected the earthquake rapidly, accurately assessed its magnitude and automatically sent out a warning — all in a handful of seconds,” said Tobin. “It was the first event that met all the criteria in Washington and it worked really well.”

During a larger earthquake, warnings will be automatic no matter the app or operating system. Warnings will also trigger certain public safety measures: Schools can connect PA systems to ShakeAlert for rapid updates, public transit may slow trains to avoid derailment and fire station doors will go up to allow firetrucks out even if electricity is lost.

Right now, the system is most effective for land-based earthquakes because the sensors are on land. Expanding the sensor network to include offshore, ocean bottom seismometers could improve detection and warning time for offshore earthquakes, namely a much-anticipated megathrust earthquake at the Cascadia Subduction Zone.

“The fundamental problem we have is that our seismic network — hundreds and hundreds of stations — is on land, but the biggest earthquake hazard comes from off our coast,” Tobin said. “Earthquake detection works much better when the earthquake is in the area of your network, not off to one side.”

Seismometers can be placed on the ocean floor, but they must be connected to cables for early warning, which is expensive. Japan installed an impressive that cost $120 million following the devastating 2011 earthquake. The country now has more than 200 seismometers covering its subduction zones.

The Cascadia Subduction Zone has a handful of existing offshore sensors — five near Vancouver Island and two off the coast of Oregon. A 91±ŹÁÏ-led project this summer to the Oregon cable, which spans hundreds of seafloor miles, crossing the subduction zone twice. None of the offshore sensors are in the ShakeAlert network, but adding them could be impactful.

, a 91±ŹÁÏ postdoctoral researcher in Earth and space science, recently at the Seismological Society of America’s annual meeting detailing the potential benefits of adding offshore seismic monitoring.

Krauss found with modeling that incorporating just a few ocean bottom sensors improved detection time for offshore earthquakes and warning time for millions of people. In hypothetical earthquake scenarios, the sensors picked up ground motion faster and improved magnitude estimates because they were closer to the fault.

“ShakeAlert is all about figuring out that an earthquake is happening as fast as possible, so having sensors nearby is essential,” Krauss said. “But in these magnitude 8 or 9 scenarios, it’s not just about detecting it, but realizing how big it is, and fast.”

The researchers also explored incorporating telecommunications cables into the sensor network using a method called distributed acoustic sensing (DAS), which records ground motion based on cable stretch. Incorporating DAS could extend the reach of existing cables even further than sensors, translating to “huge warning time improvements,” Krauss said.

Different combinations produced varying improvements in both detection and warning time, depending on where the hypothetical earthquake occurred. Regardless, having sensors always beat not having them. While there are several hurdles to clear before ocean bottom sensors can be brought into ShakeAlert, Krauss said none are insurmountable.

“Although we’ve marked this milestone of completing our station buildout, that doesn’t mean we’re not continuously improving the ShakeAlert system,” Tobin said. “We’re working to make it faster, better and more reliable.”

For more information, contact Tobin at htobin@uw.edu and Krauss at zkrauss@uw.edu.ÌęÌę

Fish that split their lives between fresh and salt water often face obstacles getting back and forth. Dams and roads fracture river networks and interfere with traditional migratory routes, sparking concerns about fish health and abundance, as well as biodiversity on a broader scale.

Efforts to restore fish passage are cropping up across the country, but these projects come with hefty price tags. In a new study, , 91±ŹÁÏ researchers explore whether this money is being well spent by examining the process that determines which projects are prioritized.

The current standard, called score and rank, involves evaluating barriers one by one and assigning a score based on potential gains, such as habitat expansion. Top-ranking projects become leading candidates for funding, but score and rank systems don’t always account for barriers in the full river context. High-scoring projects can yield stranded investments, where removing the barrier doesn’t have the desired outcome because of other barriers downstream or immediately upstream.

“Ideally, barriers that are most downstream will score higher, because they need to come out before the fish can benefit from upstream restoration, but approaches to scoring vary, so this isn’t always the outcome,” said lead author , a 91±ŹÁÏ associate professor of marine and environmental affairs.

As an alternative to score and rank, this study presents a mathematical computer program called optimization. Optimization synthesizes many inputs to make the most of a budget. It can serve as a performance indicator for other systems and highlight opportunities for improving an underperforming system.

“It’s looking at a portfolio instead of going barrier by barrier. In doing so, you can explicitly account for watershed connectivity and evaluate the performance of score and rank,” Jardine said.

As concerns about the health of rivers mounted in recent years, state and federal governments have allocated billions of dollars toward reconnecting them. Fragmentation is an established threat to biodiversity, and recent studies show that a vast majority of river length is not protected by conservation measures.

Washington state is in the midst of a court ordered multibillion dollar effort to remove barriers that block salmon and steelhead from swimming upstream to spawn. The combines score and rank with optimization in a hybrid approach. Similar projects elsewhere tend to use score and rank.

“I think people see optimization as a black box because it’s not as obvious why a barrier rose to the top of the priority list,” Jardine said. “With score and rank, they understand the scores and the process, but we don’t really know what the outcome will be.”

In this study, researchers use fish passage in Western Washington as a case study to compare score and rank to optimization. They show that score and rank performs decently well when the only goal is opening up as much habitat as possible, but adding other variables into the mix, such as habitat quality, compromises its performance.

While optimization has the capability to balance variables, it might not work for everyone. The program needs data to run and someone with a mathematical background to run it. Still, even small tweaks to the score and rank approach can produce results that rival optimization.

“Major change is hard, but minor changes may be enough,” Jardine said.

Because these projects often represent the values of multiple stakeholders, it’s important to include safeguards against stranded investments.

“You need to work from downstream up to make sure the success of a project isn’t contingent upon other projects,” Jardine said. “We’re spending a lot of money on this, but the total cost of restoring all barriers is much higher than the budget, so it’s really important that we make the most out of the financial resources that we have.”

Additional co-authors include , a 91±ŹÁÏ postdoctoral researcher in environmental and marine affairs; , who completed this research as a 91±ŹÁÏ master’s student in environmental and marine Affairs;Ìę J Kahn, who completed this research as a 91±ŹÁÏ master’s student in quantitative ecology and resource management; Andrew Cooke, a 91±ŹÁÏ research consultant in environmental and forest sciences, , a 91±ŹÁÏ research scientist in environmental and forest sciences; , a 91±ŹÁÏ associate professor of aquatic and fishery sciences and , , , and of NOAA.

This study was funded by Washington Sea Grant and the Rae S. and Bell M. Shimada Endowed Faculty Fellowship in Memory of Warren S. Wooster.

For more information, contact Jardine at jardine@uw.edu.Ìę ÌęÌę

Is it a doctor’s job to get the best outcomes for their patients or to tell the truth? What happens when these two things are not aligned? These are questions that 91±ŹÁÏ students have to wrangle with in Biol 180: Introductory Biology. The goal, says , 91±ŹÁÏ assistant professor of biology, is to have students experience a more nuanced side of biology. There is not always one right answer, and issues of power and relationships often come into play.

Theobald aims to connect the biology concepts the students learn in class to real-world issues, something she hopes will help both retain students in the biology major at the 91±ŹÁÏ and help non-majors in the class with their future careers.

Just how common is it for biology curricula to include real-world examples? One way to answer this question is to look at educational resources for biology instructors.

In published in Disciplinary and Interdisciplinary Science Education Research, Theobald and her team examined almost 3,000 science guidelines and assessment questions from 16 sources — including MCAT practice questions and questions from the Washington Comprehensive Assessment of Science and AP biology tests — for any connections to society. Of the approximately 200 elements — about 7% — that had real-world implications, many discussed ethics and public health issues.

91±ŹÁÏ News spoke with Theobald; lead author , 91±ŹÁÏ postdoctoral fellow in biology; and co-author , 91±ŹÁÏ doctoral student in biology, to find out more about these results and what they mean for biology education today.

Why do you think so few learning objectives and assessment questions were connected to real-world examples?

Carly Busch: One reason is probably that there’s a perception that real-world connections are not a part of the primary purpose of the course, that they only belong as an addendum or an aside.

This perception makes sense in some ways, given how departments and institutions have conceptualized biology and what biology undergraduate students expect to get out of a biology degree. But the lack of these connections to society was also remarkable, because I think they play a really important role in developing undergraduate students holistically and broadly as they continue on in their science careers. Real-world examples can support students’ interest in science and help them develop their scientific identity.

Madison Meuler: I think there is also a belief of, “Oh well, this is an intro biology class. If this person is going to be a scientist, they’ll get training in the societal stuff later.” But I think there’s value in having this type of information even in intro courses.

Students in these courses may or may not go on to major in biology, and may or may not pursue a career in STEM. But even if this is their only science course in college, what could they take away from it that can help them be an informed citizen in the world?

Science plays a huge role in politics and in a lot of decisions that affect people’s day-to-day lives. It’s a missed opportunity if you’re not making those connections in the classroom. We want students, regardless of their future careers, to at least walk away being equipped with some skills to critically analyze the role that science is playing in society.

You found that roughly half of the questions that did mention society only vaguely referenced real-world scenarios. Can you give examples of implicit versus explicit mentions?

CB: So the most vague mention was from the American Association of Immunologists’ recommendations for an undergraduate immunology course. This is one of the advanced subtopics that they list: the implications of Emil Von Behring’s . We coded it as a vague mention because some of those implications could be related to society, not only focused on scientific experiments.

An example of explicit incorporation is from the bioinformatics core competencies. It asks students to explain the implications, good and bad, of being able to walk into a doctor’s office and have your genome sequenced and analyzed, or of being able to obtain genetic information from direct-to-consumer testing services. There we have a very clear example of students being asked to think about how the science concept fits in with society.

Do you think that connecting science to society can help retain students in science?

CB: We haven’t tested this yet, but based on prior research, there is reason to believe that incorporating these connections is going to help students be more engaged in what they’re learning in class. Engagement is closely tied to students’ performance outcomes, which often make or break their decision to persist in a major.

There is also a theory that helping students apply what they’re learning in the classroom to things happening in their lives and in their communities .

This is something I am excited to study in the future — to understand how making these connections expands students’ perceptions of what science is and who does science. The types of research questions that most scientists ask are on topics they personally are interested in. Maybe they study wildflowers in Washington because they love hiking, and they’ve always been struck by how beautiful the flowers are. That’s the beauty of being an academic researcher: You get to explore all of the different things that you’re curious about.

MM: Connecting content to real-world experiences could also increase retention by helping students feel a sense of belonging in the classroom. You’re far less likely to persist in a class if you feel like you don’t belong in that physical space, right? The course content definitely plays a role in that.

I think that making these connections between content and societal issues could help students start thinking things like, “Oh, this is a thing I care about, how could I design a study that could provide evidence to help inform a policy decision?”

Elli Theobald: Students have said to me, “I don’t want to be a scientist because I want to help people.” And that’s a problem. If we’re teaching science in a way that makes it feel like it isn’t helping people, then we’re doing something wrong. It’s just such a huge disservice to biology because we’ll lose so many amazing and capable students who could push our field forward.

This study looked at biology education resources. Do you know if biology instructors are already incorporating more real-world connections in their courses? Ìę

CB: If instructors aren’t getting support but they’re still making these connections in the classroom, it’s because they are putting that onus on themselves and choosing to add it. I applaud all instructors who are making these connections, and I fully expect that more connections are being made than and in these resources. We are currently collecting actual course materials from intro bio courses to see where instructors are making these connections.

But I also think that it would be such a valuable resource for instructors to have more support in making those connections. Here’s where I think really bolstering the amount of resources for instructors could provide more scaffolding for instructors to be able to provide a variety of connections, or to even recognize opportunities to make these connections in the course objectives. One of my hopes for this work is that it helps to provide motivation for those sorts of materials.

ET: Instructors are amazing. They’re working so hard to connect the content in some way to students’ lives, or to find the best, coolest examples. They need to have support from their institutions to be able to do more of this in their classrooms.

This research was funded by The National Science Foundation.

For more information, contact Theobald atellij@uw.edu Busch at cbusch3@uw.edu and Meuler at mmeuler@uw.edu.

Plants may not appear aggressive, but they can still defend themselves while under attack. When caterpillars chomp the leaves of bean plants, these plants release gases that lure predatory wasps. The wasps prey on the caterpillars, saving the plants from further destruction. In a paper , a 91±ŹÁÏ-led team demonstrated that this defense strategy is run by a protein called INR, or inceptin receptor. The researchers grew bean plants with naturally occurring mutations in the INR gene alongside plants with functional INR in an experimental field in Oaxaca, Mexico. The knock-out plants didn’t emit gases and attracted far fewer wasps. This result helps explain a previous study by this team that first identified the biochemical pathway behind this defense mechanism. These results also showcase how the tiny actions of a single protein can affect the behavior of wasps and caterpillars, and in turn, protect the health of the plant. This could benefit nearby plants as well, the researchers said. Beans are often grown alongside “,” such as corn, with the idea that each plant provides a benefit for the others. Beans help make the soil richer for their companions, and, through the actions of INR, could also protect their neighbors from pests.

For more information, contact senior author , 91±ŹÁÏ associate professor of biology, at astein10@uw.edu.ÌęÌę

The other 91±ŹÁÏ co-authors are , , , and . A full list of co-authors and funding is included .

Decades of satellite data show Himalayan rivers migrating rapidly in response to climate change

The movement of rivers is often described in terms of flowing water, but the path a river takes can also change. Some migration is normal, but in the Himalayas, rivers seem to be scrambling faster than scientists anticipated. In a study , researchers show that rivers in the Tibetan Plateau moved twice as much from 2000 to 2020 as they did from 1980 to 2000. As glaciers melt and frozen ground thaws in response to rising temperatures, rivers are inundated with silty meltwater from surrounding glaciers. The water picks the path of least resistance through softening ground. The “movement” includes small lateral shifts, big swings that cut off entire sections of river and occasionally, . The international team attributes their observations to climate change, which is driving temperatures up faster here than many other places. More than 2 billion people rely on these rivers for fresh water and researchers are concerned about communities downstream, as well as the potential for similar patterns that may play out elsewhere.

For more information, contact co-author , 91±ŹÁÏ professor of Earth and space sciences at bigdirt@uw.edu.ÌęÌę

A full list of co-authors and funding is .

Researchers shrink eye-catching structure down to the nano scaleÌę

made using a network of freestanding bars suspended by a web of thin, tense cables. The organization of the bars and cables allows the network of tension and compression forces to lock everything into place, creating a lightweight yet stiff structure. Tensegrities of different sizes are common in nature — examples include and the that help living cells maintain their shape — as well as in diverse manmade structures like , and . Now, a team of engineers at the 91±ŹÁÏ have found a way to create tensegrities as small as five micrometers across — roughly a tenth of the width of a human hair. in the aptly-named journal Small, researchers used a specialized and a resin compound to print bar-and-cable structures about 30 micrometers across. They then heated the materials to 900 degrees celsius, causing the structures to shrink by over 80%. As they shrank, the thinner cables constricted more than the bars, resulting in nanostructures with specific, locked-in levels of stress that were up to 250% stiffer than the starting structures. The team is now working on ways to build larger materials composed of tiny tensegrities, which could eventually usher in a new class of stiff, light and impact-resistant materials.

For more information, contact lead author , a 91±ŹÁÏ doctoral student of mechanical engineering.

Other 91±ŹÁÏ co-authors are , , Zainab S. Patel, , and . Funding information is included .Ìę

Scientists find a key water source for atmospheric rivers

In December 2025, brought a seemingly endless onslaught of precipitation to Washington that caused and washed away roads and homes. In published in the Journal of Geophysical Research: Atmospheres, 91±ŹÁÏ researchers help explain where all that water came from. They describe a link between the , a weather pattern that brings moisture east across the Pacific, and atmospheric rivers. Hypotheses about this connection have emerged from previous studies, but researchers couldn’t physically draw it until now. By tracking precipitation and wind patterns from 2000 to 2024, the 91±ŹÁÏ researchers show that heavy rainfall and flooding are more likely when MJO is active, which happens several times a year. By identifying the MJO as a key moisture source for powerful atmospheric rivers, the researchers hope to improve forecast accuracy and give people more lead time to prepare for incoming storms.

For more information, contact co-author , 91±ŹÁÏ professor of atmospheric and climate science at shuyic@uw.edu.

Other 91±ŹÁÏ co-authors are and . Funding information is .

Burrowing shrimp are small marine excavators native to Washington. They make their homes deep in the sediment by digging, turning the ground to Swiss cheese. This presents a problem for shellfish farmers, whose clams and oysters are often smothered under layers of displaced sediment.

Burrowing shrimp have been a nuisance for at least a century. In 1929, : “Oyster growers have tried various means of defense against these persistent burrowers. But there seems to be as yet no really adequate and at the same time practical method of coping with the marine ‘crayfish.'”

Shellfish farmers used to use pesticides to kill the shrimp, but the chemicals also posed risks to other organisms, such as salmon and crabs, and could be transported in water outside the shellfish growing area. The Department of Ecology in 2018. Since then, family-owned shellfish farms have been losing large portions of their growing grounds to burrowing shrimp.

Research led by the 91±ŹÁÏ, and funded by the state, has yielded a non-chemical, proof-of-principle method for killing shrimp in targeted areas. The method, borrowing from the construction industry, uses a custom-built platform to apply vibration and pressure to a 50-square-foot region of sediment. This compacts the sediment and effectively traps shrimp in their burrows. Starved of oxygen, the shrimp die after a few days.

The researchers tested this method at four sites around Willapa Bay, Washington. It worked just as well as pesticides, reducing the number of live shrimp by between 72% and 98%.

“The challenge of managing burrowing shrimp on private tidelands has many dimensions. There still need to be enough shrimp to serve as food for gray whales and sturgeon, and the whole shrimp population is connected by a long larval phase in the ocean,” said senior author , 91±ŹÁÏ professor of biology. “Once back in the estuary though, these shrimp can live for up to 10 years. Even a moderately sized shrimp, about four inches long, can bring a handful of sediment to the surface every day, dropping that on top of everything. We’re trying to find the balance — how to keep them out of shellfish beds, but let them grow elsewhere.”

The team May 12 in the Journal of Shellfish Research.

“Burrowing shrimp have decimated our farm,” said Ken Wiegardt, a fifth-generation oyster farmer and head of Jolly Roger Oysters in Willapa Bay. “We’ve lost 75% of our nursery ground and, as a result, the farm’s carrying capacity has fallen from 265,000 bushels of market-ready oysters to 75,000 bushels. Last month I had to lay off three oyster shuckers, each of whom had been with me for many years, because I just don’t have the oysters to process. The health of the Willapa Estuary as well as my business and all of my employees depend on finding an effective tool.”

Over the years farmers and researchers have toyed with the idea of trying to “mechanically” control shrimp populations.

“The idea was, ‘Let’s crush them underground, or crush them when they come to the surface,'” Ruesink said. “There are old photographs that show people using vehicles, such as repurposed tanks and snow crawlers, to try to target the shrimp.”

This idea resurfaced at a recent conference. Over lunch, Ruesink and shellfish growers decided . After careful analysis, the method proved ineffective.

Ruesink’s co-author, Alan Trimble, who was previously a research scientist at 91±ŹÁÏ and is now volunteering on this project, had an idea for why the “crushing” experiment had failed.

“He told me, ‘You’re thinking like a dirt farmer and you need to start thinking like a concrete engineer instead,'” Ruesink said. “That’s when he mentioned these concrete vibrators in construction. When you pour concrete, if you don’t get all the bubbles out of it, it won’t be as strong. This is a consolidation technique for a wet slurry of particulates, which is exactly what a mud flat is.”

Ruesink and Trimble ran three experiments to test whether a concrete vibrator, a hand-held metal tube with a motor powered by a generator, could kill the shrimp. For each experiment the team compared sediment cores from treated plots to cores from untreated plots. The researchers took core samples on multiple days after treatment and counted live versus dead shrimp.

In an earlier experiment, the team tried using the vibrator while standing in the water. This method was successful in killing shrimp, but also not practical for scaling up. Jennifer Ruesink/91±ŹÁÏ

The best option was a custom-built floating platform with six vibrators mounted through a hollow part in the middle. Ruesink and Trimble added weights near each vibrator head to provide pressure in addition to vibration, a winning combination that compressed the sediment and killed the shrimp. The specific cause of death was asphyxiation, not the vibration.

While this proof-of-principle experiment seems promising, there’s more work to do before shellfish farmers can implement it. Right now it’s a time-consuming and labor-intensive process because everything is manually operated. Also, more studies need to be done to determine the long-term impacts to the ecosystem, from the shrimp in neighboring non-shellfish farm mudflats to other creatures living in the area.

“What we’ve done so far is introduce a novel control mechanism. No one had thought that you could trap the shrimp underground,” Ruesink said. “But this research wouldn’t have happened without the investment from the state and the private landowners and growers. I have such a deep appreciation for the opportunity to work with folks on something that is clearly affecting their lives.”

The researchers performed field trials on the private tidelands of Pacific Shellfish, Bay Center Farms and John Heckes. This research was funded by the Washington State Department of Agriculture.

For more information, contact Ruesink at ruesink@uw.edu. For more information about Jolly Roger Oysters, contact Wiegardt at oysterman73@hotmail.com.

Sunbirds may look similar to hummingbirds — small, iridescent birds with thin bills — but it turns out the two are only distantly related. Sunbirds live primarily in Africa, Asia and Australia, and have a unique way to slurp up nectar. Unlike hummingbirds, which use minute movements in their bills to sip nectar, sunbirds use their tongues as a straw. published in Current Biology, a team led by researchers at the 91±ŹÁÏ showed that these long-billed birds can change the pressure at the base of their tongues to create suction that moves nectar through their tongues and into their mouths, a novel mechanism never before seen in vertebrates. The researchers used multiple techniques — including high-speed video of sunbirds drinking red-dyed nectar from transparent artificial flowers — to demonstrate this phenomenon across multiple sunbird species as well as build a mathematical model that describes how it works. Sunbirds pollinate the flowers they drink from, and researchers are interested in understanding how different sunbird species’ plant preferences affect the plant-pollinator networks across continents.

For more information, contact lead author , who completed this research as a 91±ŹÁÏ doctoral student in biology, at david_cuban@brown.edu.ÌęÌę

The other 91±ŹÁÏ co-author is . A full list of co-authors and funding is included . Related stories in and .Ìę

Seattle Fault gets 5,000 more years of sleepÌę

Just over 1,100 years ago an on the Seattle fault rocked — and reshaped — the Puget Sound region. It lifted the sea floor and sent a powerful tsunami through the sound. Researchers have estimated that this fault, which runs east to west beneath the middle of the city, will produce a large earthquake every 5,000 years or so. However, , recently published in Geology, pushes that estimate back to 11,000 years. The researchers extended this window by scouring submerged shorelines for evidence of significant elevation changes. The geological record at these sites dates back 11,000 years, but they only found evidence of one major earthquake. This information could be useful to those making seismic hazard maps, which help people understand the risks associated with different regions. Although other regional faults and the imposing pose more imminent risks to residents, the main Seattle fault doesn’t appear to be ready for rupture anytime soon.

For more information, contact lead author , 91±ŹÁÏ research scientist of Earth and space sciences, at edav@uw.edu.

The other 91±ŹÁÏ co-author is . A full list of co-authors and funding is included in the paper. Related story in .

The PNW has many rivers, but no system for gauging landslide dam risk

Scientists have a new tool for estimating lesser known hazards in the Pacific Northwest: and outburst floods. Landslides along rivers can block the flow of water downstream, creating a lake just above the slide area. Most landslide dams fail within 10 days, releasing trapped water in an outburst flood, which can be devastating. Last fall, 20 people died after in Taiwan. published in Natural Hazards and Earth System Sciences, 91±ŹÁÏ researchers debut a mathematical approach to mapping landslide dam hazards based on valley width and projected slide size. When they applied the tool to a mountain range in Oregon, they found that roughly one-third of rivers in the study area were susceptible to landslide dams, with risk increasing in mountainous areas. If a landslide dam does form, alleviating pressure by for water to escape can help prevent flooding. Identifying high risk areas can help guide emergency response efforts following storms, earthquakes and other events that increase landslide risk.

For more information, contact lead author , 91±ŹÁÏ doctoral student of Earth and space sciences, at pmmorgan@uw.edu.

The other 91±ŹÁÏ co-author is . A full list of co-authors and funding is .

Rubin observatory expected to spot many ‘imminent impactor’ asteroids

Small asteroids — those 1 to 20 meters in diameter —Ìę hit the Earth 35-40 times per year, though they’re very rarely spotted by telescopes before impact. That could soon change: published in The Astrophysical Journal, 91±ŹÁÏ astronomers calculate that the Simonyi Survey Telescope at the NSF-DOE Vera C. Rubin Observatory could discover one to two Earth-impacting asteroids annually , roughly doubling the number currently logged. The researchers expect Rubin to discover these asteroids an average of 1.5 days before impact, which is more warning time than ever before. Advance notice is extremely valuable in the case of larger asteroids that could be a threat to people or infrastructure. Because the Rubin Observatory is located in the Southern Hemisphere, it will likely discover many Earth impactors that existing asteroid surveys — concentrated in the Northern Hemisphere — miss.

For more information, contact lead author Ian Chow, a 91±ŹÁÏ graduate student of astronomy, at chowian@uw.edu.

Other 91±ŹÁÏ co-authors are Mario Jurić, Joachim Moeyens, Aren N. Heinze and Jacob A. Kurlander. A full list of co-authors is included .

Many marine microbes share a genetic toolbox for fixing supper at sea

Researchers have now identified a set of genes that allow some bacteria to process a compound, called homarine, that is abundant in the ocean and appears to play a key role in nutrient cycling. Phytoplankton produce loads of homarine, but scientists weren’t sure what became of it until now. In a recent study published in Nature Microbiology, researchers found a set of genes present in common and far-flung bacteria that convert homarine into glutamic acid, an essential building block for life. This suggests that homarine may be a vital and overlooked resource and highlights the importance of bacteria in stabilizing marine ecosystems. Previous studies also found that homarine serves as and helps small crabs . The 91±ŹÁÏ team will continue studying homarine to better understand how it fits into the broader ecological landscape.

For more information, contact senior author , a 91±ŹÁÏ professor of oceanography, at aingalls@uw.edu.Ìę

The other 91±ŹÁÏ co-authors are , , , , , and Ìę A full list of co-authors and funding is

Even though he wanted to bike commute from his Capitol Hill home to the 91±ŹÁÏ, Jared Hwang often took transit because he struggled to find a good bike route. Apps like Google Maps and Strava might suggest hilly, busy streets simply because they have bike lanes. He even headed to Reddit to crowdsource ideas.Ìę

“I was like, surely, this cannot be the best way to do things,” said , a 91±ŹÁÏ doctoral student in the Paul G. Allen School of Computer Science & Engineering. “This data is out there. We know where bike lanes are, what the roads are like, what the speed limits are. We should be able to easily access all this information at once.”

So Hwang and a team of 91±ŹÁÏ researchers built , a demo web app that lets users find personalized bike routes in Seattle. Cyclists plug in their origin and destination — just like in other mapping apps — and can then create personalized routes by adjusting eight sliders.ÌęÌę

Researchers initially worked with four participants to understand how cyclists tend to plan their routes. Based on that, they built a prototype of BikeButler. For the basic street layout and other info, they pulled data from OpenStreetMap and government data sets. But those didn’t have information on more subjective qualities.Ìę

For those, researchers turned to Google Street View. They used a visual language model, or VLM — a type of artificial intelligence — to analyze street images and rate subjective attributes like greenery and pavement quality. The team had the VLM rate the level of greenery on streets and then compared this with two researchers’ ratings. The humans agreed with each other about as much as they agreed with the VLM — about 60% of the time. Future research might try to gather individual users’ greenery preferences to offset this discrepancy.Ìę

Once they’d mapped most of Seattle, the team tested the prototype with 16 participants.Ìę

“Overall the response was really positive,” Hwang said. “We found that people do, in fact, have contextual preferences. A cyclist riding for fun on a Saturday might want a safer, greener route compared with their fast work commute. People intuitively know this, but it hadn’t been established through research.”Ìę

Researchers say future work might integrate feedback from the user study, such as the ability to drag routes to change them slightly and an option to take fewer turns. The team is currently studying how to quantify cyclists’ preferences around intersections and turns.

The researchers note that the quality of BikeButler’s recommendations is constrained by the recency and accuracy of the data it uses. For instance, a new bike lane might not yet appear on a map, or it could appear in OpenStreetMap but not Google Street View. Also, since the team planned this as a proof of concept, BikeButler is limited to Seattle, though it could be expanded to other areas.Ìę

“I’m a lifelong biker and bike commuter,” said senior author , a 91±ŹÁÏ professor in the Allen School. “What excites me most about Jared’s work is how it points to a future where we receive route choices individualized to our preferences. So whether I’m biking with my two young children, or riding for groceries, I can find a route for that context.”

Co-authors include , a student at Issaquah High School and intern in the Allen School; , a 91±ŹÁÏ doctoral student in urban design and planning; and , a 91±ŹÁÏ student in the Allen School. This study was supported by the National Science Foundation.

For more information, contact Hwang at jaredhwa@cs.washington.edu.

The Ecological Society of America on Wednesday awards. , a 91±ŹÁÏ assistant professor of environmental and forest science, was named an Early Career Fellow, which recognizes scientists for contributions to advancing and applying ecological knowledge within eight years of completing a doctorate.

Willing studies how microbes respond, and help plants cope with, environmental change. focuses on fungi and other microbes living near plant roots. Much like the gut microbiome, these communities play a critical role in plant nutrition, immune function and overall forest health.

Willing’s lab focuses on understanding these communities and how they are shifting with climate change. Her research integrates methods from various scientific disciplines to gain insight into the ecosystem-wide impact of fungi.

“I work across pretty diverse fields, from fungal ecology to plant and forest ecology,” Willing said. “Integrating everything together is challenging, but I think it’s a critical intersection to study right now and this award is a nice acknowledgement of that.”

As a Faculty Fellow, Willing also collaborates with federal, state and tribal agencies to incorporate fungi into climate adaptation planning.

Many of her lab’s projects examine responses to climate change. For example, one of Willing’s current grad students is studying fungi in post-fire ecosystems.

Some fungal groups are fire-adapted, meaning that they can withstand wildfire better than others. After wildfire, the soil often becomes hydrophobic, which causes water to run off the surface instead of soaking in. This increases the risk of erosion, among other consequences. Fungi help seedlings to establish and stabilize the soil by helping it retain water.

Early findings from her lab indicate that prolonged fire suppression, a stewardship strategy intended to minimize wildfire impacts, can limit microorganisms fire tolerance, which then exacerbates the damage caused by a fire.

“There are lots of different nuances that we’re really just starting to understand,” Willing said.

She hopes this work can help inform future forest management practices. Although there are many mushroom enthusiasts in the Pacific Northwest, Willing is one of few scientists in the region studying how these organisms fold into broader ecosystems.

Most of the data on microbial communities was collected within the past 20 years or so, which makes it difficult to gauge how these organisms are responding to climate change. Another project in Willing’s lab involves conducting genetic analyses on preserved plant specimens to establish a baseline for fungal health.

“Our understanding of what fungal and bacterial communities were like before the onset of rapid warming is really limited,” Willing said.

Building this baseline will help researchers see how microbial communities are evolving and reveal management opportunities.

Without fungi, life on Earth couldn’t exist as we know it. Dead logs and fallen leaves would simply accumulate, with nothing to break them down and return their nutrients to the soil.

“Fungi are involved in everything,” Willing said. “In the cycle of life, they are at the beginning, helping plants to take root across every ecosystem on Earth, and at the end, helping to create lush soils for future life to flourish.”

ESA will acknowledge and celebrate fellows during a ceremony on July 27 at the annual meeting in Salt Lake City. Early Career Fellows are elected for five years.

For more information about her work, contact Willing at willingc@uw.edu.

91±ŹÁÏ researchers developed the first system that incorporates tiny cameras in off-the-shelf wireless earbuds to allow users to talk with an AI model about the scene in front of them. For instance, a user might turn to a Korean food package and say, “Hey Vue, translate this for me.” They’d then hear an AI voice say, “The visible text translates to ‘Cold Noodles’ in English.”

The prototype system called VueBuds takes low-resolution, black-and-white images, which it transmits over Bluetooth to a phone or other nearby device. A small artificial intelligence model on the device then answers questions about the images within around a second. For privacy, all of the processing happens on the device, a small light turns on when the system is recording, and users can immediately delete images.Ìę

The team will April 14 at the Association for Computing Machinery Conference on Human Factors in Computing Systems in Barcelona.Ìę

“We haven’t seen most people adopt smart glasses or VR headsets, in part because a lot of people don’t like wearing glasses, and they often come with , such as recording high-resolution video and processing it in the cloud,” said senior author , a 91±ŹÁÏ professor in the Paul G. Allen School of Computer Science & Engineering. “But almost everyone wears earbuds already, so we wanted to see if we could put visual intelligence into tiny, low-power earbuds, and also address privacy concerns in the process.”

Cameras use far more power than the microphones already in earbuds, so using the same sort of high-res cameras as those in smart glasses wouldn’t work. Also, large amounts of information can’t stream continuously over Bluetooth, so the system can’t run continuous video.Ìę

The team found that using a low-power camera — roughly the size of a grain of rice — to shoot low-resolution, black-and-white still images limited battery drain and allowed for Bluetooth transmission while preserving performance.

There was also the matter of placement.Ìę

“One big question we had was: Will your face obscure the view too much? Can earbud cameras capture the user’s view of the world reliably?” said lead author , who completed this work as a 91±ŹÁÏ doctoral student in the Allen School.Ìę

The team found that angling each camera 5-10 degrees outward provides a 98-108 degree field of view. While this creates a small blind spot when objects are held closer than 20 centimeters from the user, people rarely hold things that close to examine them — making it a non-issue for typical interactions.

Sixteen participants also wore VueBuds and tested the system’s ability to translate and answer basic questions about objects. VueBuds achieved 83-84% accuracy when translating or identifying objects and 93% when identifying the author and title of a book.

This study was designed to gauge the feasibility of integrating cameras in wireless earbuds. Since the system only takes grayscale images, it can’t answer questions that involve color in the scene.Ìę

The team wants to add color to the system — color cameras require more power — and to train specialized AI models for specific use cases, such as translation.ÌęÌę

“This study lets us glimpse what’s possible just using a general purpose language model and our wireless earbuds with cameras,” Kim said. “But we’d like to study the system more rigorously for applications like reading a book — for people who have low vision or are blind, for instance — or translating text for travelers.”Ìę

Co-authors include , a 91±ŹÁÏ master’s student in the Allen School, and , , , and , all 91±ŹÁÏ students in electrical and computer engineering.Ìę

For more information, contact vuebuds@cs.washington.edu.

Even on a campus like the 91±ŹÁÏ’s — home to particle accelerators, wave tanks and countless other bespoke pieces of equipment — the machinery in the stands out. Take the dilution fridge, a large, white, cylindrical device that can cool a small chamber to one hundredth of a kelvin above absolute zero — the coldest possible temperature in the universe.Ìę

“This is the coldest fridge money can buy,” said , a 91±ŹÁÏ assistant professor of electrical and computer engineering and the former director of the lab, which goes by the nickname QT3. “When it’s running, the chamber inside this device is about 100 times colder than outer space. At that temperature, it’s much easier to study and manipulate a material’s quantum properties.”

The lab also houses a photon qubit tabletop lab: a nondescript set of boxes, lasers and lenses that can demonstrate the “spooky” — a term scientists actually use — phenomenon known as quantum entanglement, where two particles appear to communicate instantaneously with each other despite being physically apart.

Or there’s the lab’s latest acquisition, the scanning tunneling microscope, which can image individual atoms within a solid material, allowing researchers to study the structure of materials at the smallest scales.

An interdisciplinary group of researchers has been marshalling resources and expertise to create QT3 for three years, and now, the lab is opening its doors as a unique one-stop shop resource for quantum researchers and educators at the 91±ŹÁÏ.

“The idea of this lab is to improve access to quantum hardware,” Parsons said. “It’s rather hard to acquire equipment like this. And there are a lot of researchers that may have good ideas that they want to test, but don’t have the resources yet for their own equipment. So we’re inviting researchers, initially from across campus, but also from other universities and from industry, to come in and test their ideas. This can be a hub for quantum experts to share their ideas and collaborate.”

The lab also boasts hardware that can demonstrate known quantum principles and techniques, making it useful for students in quantum fields. In addition to the entanglement device, Parsons’ students developed a machine that can suspend charged particles — in this case, tiny grains of pollen — in midair using electric fields. Researchers use the same technique to trap single atoms and manipulate their quantum properties, making the lab’s ion-trapping machine good practice for more complex work.

Some students even work at the lab through an undergraduate staffing program, and have helped install instrumentation, write code to power equipment and build parts for custom microscopes. The program provides yet another avenue for students to get hands-on experience with unusual machinery and techniques.Ìę

“Quantum mechanics is inherently counterintuitive, and that makes it a powerful teaching tool,” Parsons said. “In the QT3 lab, students will encounter systems where their everyday intuition breaks down, and they must rely on careful reasoning and experimentation instead. They learn how to debug when results don’t match expectations, how to test simple cases and how to build understanding about hardware step by step.”

The cosmically cold dilution fridge remains something of a centerpiece, even as the lab fills up with specialized equipment. The extreme environment within the device strips heat, light and other stray energy away from materials, allowing researchers to observe the peculiar quantum properties that remain. One such property is superposition, or the ability of a particle like an electron to maintain multiple mutually exclusive properties at the same time. Scientists use superposition to create a powerful, tiny piece of technology: a quantum bit, or qubit.Ìę

“Traditional computers use bits, which can only be one or zero. A qubit, on the other hand, we can make one plus zero,” Parsons said. “It’s both at the same time, and only when we measure it do we find out which one it is. We can use this unusual property to build a new class of computers that excel at tasks like communications and encryption.”

QT3 is part of a collaborative effort to solidify 91±ŹÁÏ as a leader in quantum research and applications. Most of the lab hardware was funded by a congressional earmark championed by Senator Maria Cantwell’s office. Departmental funding from across the College of Engineering and the College of Arts and Sciences helped rehab the lab space. The National Science Foundation provided seed funding for the instructional lab equipment.

The 91±ŹÁÏ has also spent the past decade investing heavily in faculty with quantum expertise.

“Very few places have expertise across the full quantum stack, from materials up to algorithms,” said , a 91±ŹÁÏ professor of physics and founder of QT3. “The 91±ŹÁÏ has quantum faculty in electrical and mechanical engineering, physics, computer science, materials science and chemistry. Our faculty work on superconducting qubits, spin defects, photons, trapped ions, neutral atoms and topological qubits. Our advantage is the breadth of our investment.”

The lab is now available to researchers and students across the 91±ŹÁÏ, and private companies are encouraged to reach out about partnering. Parsons has already used the lab to teach a graduate-level class in electrical and computer engineering for students who included employees from Boeing, Microsoft and quantum computing company IonQ. The lab is hiring for a full-time manager to maintain the equipment and help users make the most of the facility.Ìę

“Here in academia, we can improve the building blocks for applied technologies like quantum computing, and then transfer those learnings to industry for further scaling,” Parsons said.

For more information, contact Parsons at mfpars@uw.edu.