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Sky chart shows the stars Zubenelgenubi (of Libra) and the Virgo stars Spica and Kappa Virginis (abbreviated Kappa on sky chart). Click here for a larger chart
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