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Global Warming's Terrifying New Math. Population crisis: Amid global population growth, a loss of urgency. Mamta, left, and Ramjee Lal Kumhar.

Population crisis: Amid global population growth, a loss of urgency

The rate of global population growth will largely be determined by their generation, the largest in history. (Rick Loomis / Los Angeles Times) More photos By Kenneth R. Weiss, Los Angeles Times July 22, 2012. Must-read: ‘Global Warming’s Terrifying New Math’ Climate Progress “Three simple numbers that add up to global catastrophe — and that make clear who the real enemy is” CO2 emissions by fossil fuels [1 ppm CO2 ~ 2.12 GtC, where ppm is parts per million of CO2 in air and GtC isgigatons of carbon] via Hansen.

Must-read: ‘Global Warming’s Terrifying New Math’

Significantly exceeding 450 ppm risks several severe and irreversible warming impacts. U.S. leads the world in cutting CO2 emissions — so why aren’t we talking about it? Contrary to popular belief, the U.S. is making progress on climate change. We have cut our carbon emissions more than any other country in the world in recent years — 7.7 percent since 2006. U.S. emissions fell 1.9 percent last year and are projected to fall 1.9 percent again this year, which will put us back at 1996 levels. It will not be easy to achieve the reductions Obama promised in Copenhagen — 17 percent (from 2005 levels) by 2020 — but that goal no longer looks out of reach, even in the absence of comprehensive legislation.

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