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Salmon conservation shouldn鈥檛 narrowly focus on managing flows in streams and rivers or on preserving only places that currently have strong salmon runs. Instead, watersheds need a good mix of steep, cold-running streams and slower, meandering streams of warmer water to keep options open for salmon adapted to reproduce better in one setting than the other, new research shows. Preserving that sort of varied landscape serves not just salmon, it provides an all-summer buffet that brown bears, gulls and other…

When a 91探花 researcher listened to the audio picked up by a recording device that spent a year in the icy waters off the east coast of Greenland, she was stunned at what she heard: whales singing a remarkable variety of songs nearly constantly for five wintertime months. Listen to the bowheads repeat their other-worldly song as they cross the Fram Strait. Bowhead whale song 1 Bowhead whale song 2 Kate Stafford, an oceanographer with UW鈥檚 Applied Physics…

Not having enough Chinook salmon to eat stresses out southern resident killer whales more than having boatloads of whale watchers nearby, according to hormone levels of whales summering in the Salish Sea. In lean times, however, the stress normally associated with boats becomes more pronounced, further underscoring the importance of having enough prey.

The fourth Environmental Innovation Challenge was the biggest yet. The winning team proposes to replace concrete lane dividers with ones made from recycled rubber tires. Other student teams presented their prototypes for emergency shelters, rooftop gardens, nonstick cookware and other green businesses.

A new online portal and smartphone app lets Washington and Oregon residents enter the addresses of their homes, schools, workplaces or kids’ day care centers to check if they’re in harm’s way should a tsunami hit. The tool, being publicized on the heels of the one-year anniversary of the Tohoku tsunami, was developed by researchers at the Applied Physics Laboratory.

Over the next three years, a team of 91探花students will convert a 2013 Chevy Malibu into a fuel-efficient, low-emissions vehicle that still meets consumer demands for a driver-friendly car. The 91探花is one of 15 schools participating in the EcoCAR 2 contest, sponsored by General Motors and the U.S. Department of Energy.

Learn about polar bears and penguins. Center a two-foot tusk on your forehead and imagine youre a narwhal exploring your icy-ocean home. For these activities and more, grab the kids and head for Polar Science Weekend, March 1 to 4, sponsored by the UW’s Applied Physics Laboratory and Pacific Science Center.

The plight of the tiger 鈥 none of the worlds 350 protected areas in the tigers range is large enough to support a viable population 鈥 is the subject of the UWs “Sustaining our World鈥 lecture March 1. Eric Dinerstein, the World Wildlife Funds chief scientist and a 91探花alum, will speak on “All Together Now: Linking Ecosystem Services, Endangered Species Conservation and Local Livelihoods鈥 at 6 p.m., in Kane 220.