Leading Canadian environmentalists attending UN climate talks in Bali cautiously welcomed the government’s new acceptance of the overwhelming scientific evidence that 2°C of global warming is a threshold that must not be crossed.
In Canada’s House of Commons yesterday, Environment Minister John Baird stated that “a rise of 2° in the earth’s temperature as a result of human activity contributing to global warming, simply put, is unacceptable.”
Based on scientific projections of catastrophic impacts at an average temperature 2°C above the pre-industrial level, many countries have adopted this limit as the definition of “dangerous” climate change. Avoiding dangerous climate change is the ultimate objective of the UN climate convention, which has been ratified by virtually every country in the world.
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