Where do the Presidential candidates stand on science issues?

Read this and discover for yourself. The highlights:

Climate change: Both candidates talk of human activities’ warming the planet, with Mr. McCain saying that they “threaten disastrous changes” and Mr. Obama that “they are influencing the global climate.” In terms of 1990 levels of carbon emissions, Mr. McCain would ultimately have the nation’s output drop by 60 percent and Mr. Obama by 80 percent.

Energy: Mr. Obama would increase federal investment in clean energy by $150 billion over a decade, including research on alternative fuels and conservation. Mr. McCain would speed the building of 45 new reactors and make government “an ally but not an arbiter” in developing alternative energy sources.

Stem cells: Both support federal financing for embryonic stem cell research.