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Day and night sides of Earth at instant of first quarter moon on 2013 June 16 at 17:24 Universal Time. Image credit: Earth and Moon Viewer
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