06/01/2016

What motivates people to walk and bike? It varies by income

Lower- and middle-income King County residents who live in denser neighborhoods—with stores, libraries and other destinations within easy reach—are more likely to walk or bike, according to new University of Washington ...

Killer whales feast on salmon in summer

Salmon are the primary summer food source for an endangered population of killer whales in the Pacific Northwest, according to an analysis of fish DNA in killer whale poop published Jan. 6, 2016 in the open-access journal ...

Leopard sharks navigate with their nose

Olfaction may contribute to shark ocean navigation, likely based on their ability to sense chemical changes in the water as they swim, according to a study published January 6, 2016 in the open-access journal PLOS ONE by ...

Drought, heat take toll on global crops

Drought and extreme heat slashed global cereal harvests between 1964 and 2007 - and the impact of these weather disasters was greatest in North America, Europe and Australasia, according to a new study published in Nature ...

One crop, two ways, multiple benefits

Nitrogen fixation is one of the best examples of cooperation in nature. Soil microbes - naturally occurring bacteria in the soil - work with plants to pull nitrogen from the air. They turn the nitrogen into a form the plant ...

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