"The new report's bottom line: If the goal is to try to hold global average temperatures to an increase of 2 degrees Celsius (3.6 degrees Fahrenheit) above preindustrial levels, global greenhouse-gas emissions need top out sometime between 2015 and 2020.
"To stabilize the climate around that 2-degree goal, the global economy needs to reduce average carbon-dioxide emissions to less than 1 metric ton per person per year by 2050, the group adds. This is equivalent to cutting per capita emissions by 80 to 95 percent below 2000 levels in developed countries by 2050.
All of the sudden, Obama's tentative commitment of a 17% percent reduction seems kinda paultry.
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