“We have functionally passed the two degree threshold that is touted as being safe.”
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No, we haven’t. There are ~540 different emissions scenarios explored in the most recent IPCC report that limit warming to below 2C with at least a 66% chance. One can be pessimistic about our politics, but the physical climate response is what it is. carbonbrief.org/analysis-what-
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"If 10 to 15 percent of developed agricultural land could be covered with mirrors, Tao has calculated, it would return Earth’s heat to safe preindustrial levels" - taxi for Tao!
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