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You gotta love Rick Perry's swagger. The Texas Governor is out there in the Iowa cornfields, unabashedly going to toe-to-toe with President Obama, doing his best to instantly cast himself as the big dog in the Republican pack.
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The relevant questions now are: How do we move beyond coal? How do we bring new jobs to the coal fields and retrain coal miners for other work? How do we inspire entrepreneurialism and self-reliance in people whose lives have been dependent on the paternalistic coal industry?
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Maybe more climate activists will think about the climate change not as an international problem to be resolved in an air-conditioned meeting hall, but as a guerilla war to be fought in the streets.
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Americans don't pay much attention to environmental issues, because they aren't sexy. I mean, cleaning up coal plants and reining in outlaw frackers is hugely important work, but it doesn't get anybody's pulse racing.
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Obama's record on climate issues is not all bad.
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Bloomberg's $50 million is not going to revolutionize the electric power industry. But his willingness to fight is already inspiring others to see Big Coal differently.
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To understand how quickly we're cooking the planet, we need good data. To have good data, we need good satellites.
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When it comes to global warming, coal is the gorilla in the room.
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You think the weather is weird now? Just wait. A new MIT study, just published in a peer-reviewed journal, projects that the Earth could see warming of more than 9 degrees F by 2100 - more than twice earlier projections.
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When it comes to energy, cost isn't everything - but it's a lot. Everybody wants cheap power.
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With nine degrees of warming, computer models project that Australia will look like a disaster movie. Habitats for most vertebrates will vanish. Water supply to the Murray-Darling Basin will fall by half, severely curtailing food production.
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By burning fossil fuels, we are already dumping 30 billion tons of CO2 into the atmosphere every year, which has a profound effect on the climate. So, like it or not, we're already messing with a system we don't understand.
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Nobody disputes that cheap natural gas would be a good thing for the economy. The question is, is this a sustainable new development that can be counted on for decades to come, or simply a 'bubble' brought on by a land grab and drilling frenzy?
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If we drill the hell out of everything, including protected public lands and fragile regions like the Arctic National Wildlife Refuge, America can emerge as an 'energy superpower.'
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The floods and fires and storms and droughts that Australia has suffered in the last few years have left no doubt in many Australians' minds about just how much is a stake in a super-heated world.
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Ethanol doesn't burn cleaner than gasoline, nor is it cheaper.
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It's not all Obama's fault: His plans to rebuild America's energy infrastructure have been hampered by the recession, and his efforts on global warming have been stymied by Tea Party wackos and weak-kneed Democrats in Congress.
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President Obama is in no danger of being judged by history as an eco-radical.
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When it comes to climate and energy, Gates is a radical consumerist. In his view, energy consumption is good - it just needs to be clean energy.
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In the United States, we do a pretty good job of protecting iconic landscapes and postcard views, but the ocean gets no respect.
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Compared to coal, which generates almost half the electricity in the United States, natural gas is indeed a cleaner, less polluting fuel. But compared to, say, solar, it's filthy. And of course there is nothing renewable about natural gas.
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If you are interested enough in the climate crisis to read this post, you probably know that 2 degrees Centigrade of warming (or 3.6 degrees Fahrenheit) is the widely acknowledged threshold for "dangerous" climate change.
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Is it in our national interest to overheat the planet? That's the question Obama faces in deciding whether to approve Keystone XL, a 2,000-mile-long pipeline that will bring 500,000 barrels of tar-sand oil from Canada to oil refineries on the Gulf of Mexico.
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The idea that human beings have taken a few steps closer toward asserting control over the Earth's climate is likely to strike you as a really bad idea.