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Clinton leaves office with the best conservation record since Teddy Roosevelt.
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The George W. Bush energy plan empasizes oil exploration and new construction of coal and nuclear plants.
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The U.S. wind energy industry wins passage of an extended production tax credit for electricity generated by wind power, effectively giving the industry incentives enough to take off.
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An energy bill is introduced into congress that would include ethanol mandates and incentives for nuclear power plant construction. After this bill passes, many nuclear companies apply to the Nuclear Regulatory Commission for permission to build new nuclear plants.
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U.S. Congress votes in favor of opening the Alaska National Wildlife Refuge to oil drilling, but the vote snags later in November as public opinion turns against Bush's energy policies.
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The EPA rejects a petition from environmental groups to regulate greenhouse gas emissions from automotive vehicles.
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Former vice-president Al Gore releases his documentary "An Inconvenient Truth," warning people about the consequences of global warming.
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Researchers at the University of Texas conclude that Greenland's glaciers are melting at a rate twice as fast as predicted.
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Renewable energy investment top $100 billion per year, according to the U.N. Environmental Program.
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The group of eight, or G-8, industrialized countries say they will cut carbon dioxide emissions by 50 percent by 2050, the first time all eight countries have commited to combatting climate.
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Scientists at the Global Climate Project predict that current carbon dioxide trends will mean an 11 degree Fahrenheit rise by 2100.
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U.S. Climate Data Center says 2007 was the warmest year on record.
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President Obama is sworn in on promises to put policies in place that will cut carbon emissions by 80 percent by 2050.