Trilobites: As Winter Sets In, Tiny Shrews Shrink Their Skulls and Brains Researchers who documented a head-size reduction of as much as 20 percent say it may be a survival strategy to reduce energy use in the colder months. Share: Facebook Twitter Google+ Stumble Digg Email ThisBlogThis!Share to XShare to Facebook Related Posts:SpaceX live stream: Watch live coverage of Dragon spacecraft arriving at ISSLyrid meteor shower 2018: When is the meteor shower and how to see the Lyrids this monthThe Story Behind Japan’s Bathing MonkeysScienceTake: Hot Springs Lower Stress in Japan’s Popular Bathing MonkeysNow Read This: Discussion Questions for the PBS NewsHour-New York Times Book Club’s April Pick: ‘The Death and Life of the Great Lakes’Is there life on Venus: SHOCK discovery finds alien life might exist in Venus’ clouds