| Sourced From Good.is |
How low can you go? That’s the question environmentalists will be asking world leaders when they gather in Copenhagen, Denmark, in December to hash out a new global climate treaty mandating how drastically countries will slash their greenhouse gas emissions. Galvanized by NASA scientist James Hansen, a growing number of advocates are pushing an ambitious target: 350 parts per million, which they say is the maximum concentration of carbon dioxide we can support in our atmosphere if we want to prevent the most catastrophic effects of climate change.
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Posted on July 19, 2009
· in USA