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Glaciers in the Himalayas have shrunk by as much as a fifth in just 30 years, scientists have claimed in the first authoritative confirmation of the effects of climate change on the region.

Plunge in CO2 put the freeze on AntarcticaAtmospheric carbon dioxide levels plunged by 40% before and during the formation of the Antarctic ice sheet 34 million years ago, according to a new study. The finding helps solve a long-standing scientific puzzle and confirms the power of CO2 to dramatically alter global climate.

University of Alberta-led research has confirmed that a relatively harmless inorganic form of mercury found worldwide in ocean water is transformed into a potent neurotoxin in the seawater itself.

The terse announcement came just after 9:45 p.m. Sunday from Dan Pfeiffer, the White House communications director. "POTUS to address the nation tonight at 10:30 PM Eastern Time," he wrote on Twitter, sharing the same message that had just been transmitted to the White House press corps. According to Brian Williams, the "NBC Nightly News" anchor, some journalists received a three-word e-mail that simply read, "Get to work.