TOP 100 SCIENCE SITES
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| Heat seekers: Pictures reveal how animals keep warm It might look like an artwork, a surreal photo-negative based on the natural world, but this is a very real photograph, taken at London Zoo using a camera that detects only heat. In it, a pelican wanders away from a pool of water, leaving a trail of warmer footprints behind it. Its body stays warm under a covering of feathers, leaving it looking dark blue to the camera, which only detects the infra-red radiation coming off the animal. guardian.co.uk |
'Predictably Irrational': Keeping (too many) options open In his new book, Dan Ariely, a professor of behavioral economics at MIT, describes the human penchant for keeping options open. iht.com |
Cassini Gets a Cool Shower From an Ice-Spewing Moon NASA’s Cassini spacecraft had a deliberate near-miss with Enceladus on Wednesday afternoon, passing about 30 miles above its surface. nytimes.com |
Cities Switch Off Lights for Earth Hour CHICAGO (AP) -- From the Sydney Opera House to Rome's Colosseum to the Sears Tower's famous antennas in Chicago, floodlit icons of civilization went dark Saturday for Earth Hour, a worldwide campaign to highlight the threat of climate change.... hosted.ap.org |
Q&A: Let the Sunshine in Am I still getting vitamin D when I’m outside on a gray, cloudy day? nytimes.com |