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Look westward some 45 to 60 minutes after sunset to spot Venus and Mercury near the horizon. You may – or may not – need binoculars to see Mercury
Matt Daniel's WeatherGlobe
U.S. snow and ice in 2013 compared to 2012
Blogus scientificus by Alex Reshanov
Humans aren't top predators, says new report
Earth Trekker by Deanna Conners
Early warning system for abrupt climate impacts