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President Obama to Announce Climate Change Plan TodayThe president will discuss climate change in an address at Georgetown University today.
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NASA Checks Tundra for Greenhouse GasesNASA mission skims the tundra, sniffing out methane and carbon dioxide.
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High US Methane Levels Found in Cross-Country DriveGas levels were higher than previously thought.
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Ice-Free Arctic May Be Near, Study SuggestsResearchers analyzed a sediment core from the oldest deep lake in the northeast Russian Arctic.
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Historical Climate Study Reveals Humans' Role in Current WarmingThe study found that warming temperatures in the 20th century reversed a long-term cooling trend.
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Past Antarctic Warming Linked to Greenhouse GasPast increases in carbon dioxide levels in Antarctica were tied to warming temperatures, suggesting modern greenhouse gas emissions may cause similar warming
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Tiny Solar Activity Changes Affect Earth's ClimateEven small tweaks to the sun's weather cycle can have a ripple effect on Earth's climate.
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The 7 Hottest Climate Change Stories of 2012Record heat, Arctic melt, global climate talks, we count down the biggest climate stories this year.
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What is a Carbon Sink?Natural carbon storage systems may be blocked by global warming.
