According to the AP: Secretary of State Hillary Rodham Clinton said Monday that any
agreement to combat global warming should require developing countries
like India and China to reduce emissions, a position that prevented
former President George W. Bush from signing an international pact.

She went on to say: There is no sense in negotiating an agreement if it will have no practical impact in reducing emissions to safer levels.

Huh–reduce emissions to safer levels? Since when were emissions of CO2 a safety issue? Most of us exist inside buildings and rooms with 10 or 20 times the concentrations of CO2 that will ever be experienced in the atmosphere without any concern for our safety.