Department of Biology

The overlap between humans and animals will increase substantially across much of the planet in less than 50 years due to human population growth and climate change, according to a collaborative study by scientists at the University of Michigan, the University of Washington and University College London. By 2070, the overlap between humans and more than 22,000 vertebrate species will rise across nearly 57% of Earthâs land, according to the team.

Pets were once dismissed as trivial scientific subjects. Today, companion animal science is hot. Daniel Promislow, professor of biology and of laboratory medicine and pathology at the UW, is quoted.

As the weather starts heating up this week, you may be tempted to go outside—but with the outdoors comes the possibility of getting bitten by mosquitoes. And if you find yourself getting a lot of mosquito bites, it could be because of the way you smell or the colors of the clothes you are wearing, recent research has found. The UW's Jeff Riffell, professor of biology, and Melissa Leon Norena, a doctoral student of biology, are quoted.

Could those irritating mosquito bite bumps soon become a thing of the past? Researchers at the UW are studying the understanding of the feeding behaviors of mosquitoes. Jeff Riffell, professor of biology at the UW, is quoted.

The UW is delighted to announce the recipients of the 54th annual University of Washington Awards of Excellence! The awards honor outstanding alumni, faculty, staff, students and retirees who contribute to the richness and diversity of our University community.

Dr. Abigail Swann, a UW professor of atmospheric sciences and of biology, led a project that combined climate projections with plant models to determine what combination of traits might be best adapted to future climates. The study used projections of weather and climate across the U.S. in 2050 and 2100 with a model that simulates corn’s growth to find the mix of traits that will produce the highest, most reliable yield under future conditions across the country.

Zebrafish embryos aboard the Chinese Tiangong Space Station are the latest ‘aqua astronauts.’ Aaron van Loon, postdoctoral scholar of biology at the UW, is quoted.

Jeffrey Riffell, a University of Washington professor of biology, wants to understand how female mosquitoes find find a host to bite for a bloody meal. His research has shown that hungry mosquitoes find us by following a trail of scent cues, including chemicals exuded by our skin and sweat, as well as the carbon dioxide gas we exhale with each breath. Mosquitoes also like colors, at least certain ones. His team is closing in on how the sense of smell and vision work together to help a mosquito zero in for the final strike and get her blood meal.

And a new study offers a fuller understanding of tool use by sea otters. Otters in California's Monterey Bay use rocks and other objects to break open hard prey, letting them access certain larger prey and reducing their tooth damage. Chris Law, research scientist and teaching professor in biology at the UW, is quoted.

When sea otters face competition for their favorite kinds of food, some use tools — like rocks and even glass bottles — to open tougher prey. That’s according to a new study of sea otters in Monterey Bay, California. Chris Law, research scientist and teaching professor in biology at the UW, is interviewed.

The College of Arts & Sciences celebrates undergraduate and graduate students from across all four divisions, who are recognized for making the most of their time at the UW. 

Anatomy for Change, a program for students underrepresented in healthcare careers, provides opportunities to spend time in an anatomy lab.

Often vilified by Hollywood as potential competitors and even threats to humans, both sea dwelling and fictional off world octopuses have made many a filmgoer squirm in horror. Aside from their piercing eyes, their brains and morphologies are as different from humans as any species could be. Peter Ward, professor of Earth and space sciences and of biology at the UW, is quoted.

Hummingbirds, I realized, are not just adorable. They're also jerks. Yes, jerks. But don't take my word for it. Alyssa Sargent, doctoral student of biology at the UW, is quoted.

The University of Washingtonâs graduate and professional degree programs were widely recognized as among the best in the nation, according to U.S. News & World Reportâs 2025 Best Graduate Schools rankings released late Monday.