Friday, December 14, 2007

Global Warming and Climate Change: Fundamentals

Its anthropogenic (caused by human activity). Global temperature rises need to be kept to a maximum of 2 degrees above pre-industrial levels or else risk runaway warming and serious consequences. Emissions need to be reduced by between 25-40% below 1990 levels by 2020, and between 60-90% by the year 2050.

The UNEP report said irreversible damage to the world's climate will be likely unless greenhouse gas emissions drop to below 50% of their 1990 levels before 2050. To reach this level, the richer countries must cut emissions by 60% to 80% by 2050 and developing countries must also make significant reductions.

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