Jonathan Pershing, head of the U.S. delegation at the UN climate talks in Barcelona, says China should cut its CO2 emissions 50% by 2050.

Reuters reports:

BARCELONA, Spain, Nov 5 (Reuters) - China should roughly halve its greenhouse gas emissions by 2050 to keep the world on a safe climate path, the head of the U.S. delegation at U.N. climate talks in Barcelona said on Thursday.

Leading industrialised countries say that the world must halve greenhouse gases by 2050 to avoid the worst effects of…

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Today’s post in my series of commentaries on excerpts from CEI’s film, Policy Peril: Why Global Warming Policies Are More Dangerous Than Global Warming Itself, challenges the Gorethodox dogma that the science debate on global warming is “over.”

There are three basic issues in the climate change science debate:

Detection - Has the world warmed, and if so, by how much?
Attribution - How much of the observed warming (especially since the mid-1970s) is due to increases in atmospheric greenhouse gas concentrations?…

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