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A pair of studies published April 14 in the journal Science paint a new picture about apes, ancient Africa and the origins of humans. Many scientists had once hypothesized that the first apes to evolve in Africa more than 20 million years ago ate primarily fruit and lived within the thick, closed canopy of a nearly continent-wide forest ecosystem. Instead, the new research indicates that early apes ate a leafy diet in a more arid ecosystem of varyingly open woodlands with abundant grasses.

UW oceanographers discovered warm, chemically distinct liquid shooting up from the seafloor about 50 miles off Newport. They named the unique underwater spring “Pythia’s Oasis.” Observations suggest the spring is sourced from water 2.5 miles beneath the seafloor at the plate boundary, regulating stress on the offshore subduction zone fault.

An international team of scientists has for the first time detected neutrinos created by a particle collider. The discovery — announced March 19 by the Forward Search Experiment, or FASER collaboration — promises to deepen scientists’ understanding of the nature of neutrinos, which are the most abundant particle in the cosmos. FASER’s detector picked up neutrinos generated by the Large Hadron Collider, which is based at CERN in Geneva, Switzerland.

The University of Washington today announced that it is part of a multi-pronged grantmaking strategy from Ballmer Group aimed at drawing more people into careers in early childhood education in our state — including by providing more than 1,500 scholarships over the next eight years.

In the Pacific Northwest and British Columbia, southern resident orcas have experienced no net population growth since the 1970s, with just 73 left at the most recent count. But northern resident orcas, which have a similar diet, territory and social structure, have grown steadily, now numbering more than 300. A new study led by scientists at the University of Washington and NOAA Fisheries may help explain why: The two populations differ in how they hunt for salmon, their primary and preferred food source, a key difference that conservationists will have to take into account when designing interventions to help southern residents.

Research led by scientists at the University of Washington’s Center for Ecosystem Sentinels reveals that a warming world is increasing human-wildlife conflicts globally. They show that climate shifts can drive conflicts by altering animal habitats, the timing of events, wildlife behaviors and resource availability. It also showed that people are changing their behaviors and locations in response to climate change in ways that increase conflicts.

Scientists suspect that the red streaks crossing the surface of Jupiter’s moon Europa is a frozen mixture of water and salts, but its chemical signature matches no known substance on Earth. Now researchers have discovered a new type of solid crystal that forms when water and table salt combine in cold, pressurized conditions. Researchers believe the new substance created in a lab on Earth could form at the surface and bottom of these worlds’ deep oceans.

Two University of Washington faculty members have been awarded early-career fellowships from the Alfred P. Sloan Foundation. The new Sloan Fellows, announced Feb. 15, are Leilani Battle, an assistant professor in the Paul G. Allen School of Computer Science & Engineering, and Jonathan J. Zhu, an assistant professor in the Department of Mathematics.

A team led by researchers at the University of Washington studied how artificial intelligence could help people on the platform TalkLife, where people give each other mental health support. The researchers developed an AI system that suggested changes to participants’ responses to make them more empathetic. The best responses resulted from a collaboration between AI and people.

Something is amiss in the Butterfly Nebula. When a team led by astronomers at the University of Washington compared two exposures of this planetary nebula that had been taken by the Hubble Space Telescope in 2009 and 2020, they saw dramatic changes in the material within its “wings.” As the team will report on Jan. 12 at the 241st meeting of the American Astronomical Society in Seattle, powerful winds are apparently driving complex alterations of material within the Butterfly Nebula, behavior not seen in planetary nebulae to date. The researchers want to understand how such activity is possible from what should be a “sputtering, largely moribund star with no remaining fuel.”

On Jan. 11 at the 241st meeting of the American Astronomical Society in Seattle, a team led by scientists at the University of Washington and the Center for Computational Astrophysics reported something unexpected about the distinct populations of stars that make up the Triangulum galaxy: In this satellite galaxy, a close companion of the much larger Andromeda galaxy, old and new stars occur in separate parts of the galaxy’s structure, something not seen in galaxies like our own and so far not reporter for other satellite galaxies.

University of Washington astronomers were on the lookout for “stars behaving strangely” when an automated alert from pointed them to Gaia17bpp, a star that had gradually brightened over a 2 1/2-year period. But follow-up analyses indicated that Gaia17bpp wasn’t changing. Instead, the star is likely part of a rare type of binary system. Its apparent brightening was the end of a years-long eclipse by an unusual, “dusty” stellar companion.

Climate change will reshape ecosystems through two types of events: short-term, extreme events — or “pulses” — and long-term changes, or “presses.” Understanding the effects of presses and pulses is essential as conservationists and policymakers try to preserve ecosystems and safeguard biodiversity. Researchers at the University of Washington have discovered how different presses and pulses impacted Magellanic penguins — a migratory marine predator — over nearly four decades and found that, though individual presses and pulses impacted penguins in a variety of ways, both were equally important for the future survival of the penguin population. They also found that these types of climate changes, taken together, are leading to an overall population decline at their historically largest breeding site.

Save the … parasites? Analyzing 140 years of parasite abundance in fish shows dramatic declines, especially in parasites that rely on three or more host species. The decline is linked to warming ocean temperatures. Parasitic species might be in real danger, researchers warn — and that means not just fewer worms, but losses for the entire ecosystem.

University of Washington Provost Mark Richards announced the appointment of Fredrick Muyia Nafukho as the new Vice Provost for the Office of Academic Personnel beginning Feb. 1, pending approval by the Board of Regents. Nafukho also will hold a tenured faculty position in the Department of Management and Organization in the Foster School of Business.

A study measuring the sleep patterns of students at the University of Washington found that students fell asleep later in the evening and woke up later in the morning during winter, when daylight hours on the UW’s Seattle campus are limited and the skies are notoriously overcast. Researchers believe the students’ natural circadian clocks were being “pushed back” or delayed in winter because they were not getting enough exposure during the day to natural light, and that getting more daytime light exposure can help reverse this.

In a study published Dec. 8 in Nature Astronomy, an international research team, led by Orsola De Marco of Macquarie University in Sydney, Australia, analyzed 10 highly detailed exposures taken by the JWST of the Southern Ring Nebula. Their calculations show the central star that ejected the expanding nebula gas was originally three times the mass of the sun, and that unseen companions shaped the nebula’s intricate features.

Researchers at the University of Washington have detected “toxic” small aggregates of a particular protein in the blood of individuals with Alzheimer’s disease, as well as in individuals who showed no signs of cognitive impairment at the time the blood sample was taken, but who developed it at a later date. This blood test picks up oligomers — or small, misfolded aggregates — of the amyloid beta protein, which scientists believe triggers the development of Alzheimer’s.

Improving faculty dispute resolution policies, promoting ways to improve terms of employment for clinical faculty, reenvisioning the merit and promotion process for faculty on all three University of Washington campuses, and continuing to promote diversity, equity and inclusion practices are top priorities for this year’s UW Faculty Senate Chair Dr. Gautham Reddy, a professor in Department of Radiology in the School of Medicine.

Perched on the southeast corner of the University of Washington campus, where the Montlake Cut meets Union Bay, the ASUW Shell House looks as vulnerable as it does majestic. Over the course of a century, the structure built as a critical wartime post later was the home to a group of rowers who captured the nation’s imagination before becoming an all-but-forgotten artifact of the past. Now, propelled by a wave of renewed interest, the 12,000-square-foot wooden structure is the focus of an $18.5 million campaign that will restore and renovate the space.

University of Washington researchers found that adopting permanent daylight saving time in the United States would reduce deer-vehicle collisions and likely prevent an estimated 36,550 deer deaths, 33 human deaths, 2,054 human injuries and $1.19 billion in costs each year. Deer-vehicle collisions would decrease under permanent DST because skies would be brighter later into the evening.

University of Washington President Ana Mari Cauce is among the new members elected to the National Academy of Medicine “for exemplary and visionary leadership in public higher education administration; innovations in health research, education, and service systems that enhance pathways for women and underrepresented groups; initiatives to address interconnections between health equity, population health, and climate change; and pioneering behavioral health intervention research on Latinos.”