US President Barack Obama says climate change will impact every country on the planet and is a serious threat to U.S. national security.
Speaking at the US Coast Guard Academy in the state of Connecticut, the President said the world must reduce its carbon emissions immediately.
He said the science is clear - climate change is happening.
IN: "The best..."
OUT: "...800,000 years."
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President Obama said climate change is a global problem.
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OUT: "...is immune."
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