2009 Science News of the Year: Life | Science News

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2009 Science News of the Year: Life

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5:03pm, December 18, 2009

Gentler winters shrink sheep
Warming has trumped the benefits of fat to shrink sheep on the remote North Atlantic island of Hirta, a new analytical approach has revealed (SN: 8/1/09, p. 12). Weights for wild female Soay sheep dropped about 5 percent during the past two decades, says Tim Coulson of Imperial College London’s campus in Berkshire. He and his colleagues teased apart the causes by incorporating detailed annual data into the basic equations that population biologists use to describe how traits change over time. The researchers combined the equ

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