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You’ll have plenty of time to catch the moon and Regulus after nightfall. But you’ll have to catch the planets Venus and Mercury as dusk ebbs into darkness.
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