Researchers have sequenced the genome of the common water flea, Daphnia, shown in this false-color micrograph. About 35 percent of the genes are brand new to science.
Jan Michels/Christian-Albrechts-Universitat zu Kiel
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Jan Michels/Christian-Albrechts-Universitat zu Kiel
Workers remove snow from the roof of a Home Depot in Methuen, Mass., on Tuesday. After a massive snowstorm, many rooftops in the Northeast were feared to be close to their weight limits.
Cheryl Senter/AP
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Crime-scene barrier tape is seen at the University of Texas at Austin after a gunman opened fire and then killed himself in September. Such incidents prompted lawmakers in the state to push legislation removing "premises of higher education" as gun-free zones.
Eric Gay/AP
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The Green Bay Packers and the Pittsburgh Steelers battle it out on Sunday for the NFL title — but which team has the best music?
Getty Images
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