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Posted Wed Apr 23 2014: from
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Two degrees: How the world has failed on climate change http://apocadocs.com/s.pl?1398254109
...[J]ust this month, the IPCC put out a new report saying, OK, not great, but we can still stay under 2 deg C. We just need to act more drastically and figure out some way to pull carbon dioxide back out of the atmosphere. (Never mind that we still don't have the technology to do the latter.)...
At current rates, the world will exhaust its carbon budget and breach 2°C in roughly three decades. (If climate sensitivity turns out to be low, that only buys us an extra decade or so.)
If we want to stay within the budget and avoid 2 deg C, then, our annual emissions need to start declining each year. Older, dirtier coal plants would need to get replaced with cleaner wind or solar or nuclear plants, say. Or gas-guzzling SUVs would need to get replaced with new low-carbon electric cars. But the longer we put this off, the harder it gets -- the carbon budget gets smaller, and there are more coal plants and SUVs to replace.
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