Global Warming's a real problem that needs a real president

Last week, a scientist from NASA named James Hansen testified before Congress and said that global warming was a serious threat to Earth. He said that the carbon dioxide level that captures heat is continuing to rise, therefore, a rise in global temperatures should be expected. The thing is, the same scientist told Congress about the problem twenty (20) years ago. The climate data (1988) showed that the average temperature on Earth was warmest year on record to that date. Since the time, 14 of the 20 years have had record temperatures. Hansen said that atmospheric carbon dioxide levels were currently at 387 ppm, but he said the Earth needed to lower the level to 350 ppm to avoid severe affects on the planets life.

We missed the boat for the last 20 years? Which presidential candidate is the best to take charge and help improve the Earth's environment? McCain, Obama, or ?