SSS 2011-03-16（在线收听）

This is Scientific American's 60-Second Science. I'm John Rennie. Got a minute?

Congress has finally acted on global warming—by denying it exists. It's in the grand lawmaking tradition of the Indiana state legislature's 1897 attempt to redefine the value of pi.

The Republican-led House of Representatives is currently working on the Energy Tax Prevention Act of 2011, which would bar the Environmental Protection Agency from regulating carbon dioxide emissions to mitigate climate change.

In the House Energy and Commerce Committee, California Democrat Henry Waxman had proposed an amendment calling on Congress to at least acknowledge that "warming of the climate system is unequivocal," just as abundant scientific evidence confirms.

But on Tuesday, March 15, all the committee's Republicans voted down that amendment, as well as two others acknowledging the threat of climate change to public well-being. Rep. Ed Markey, Democrat from Massachusetts, had this to say:

"I rise in opposition to a bill that repeals the scientific finding that pollution is harming our people and our planet. However, I won't rise physically, because I'm worried that Republicans will overturn the law of gravity, sending us floating."

Thanks for the minute. For Scientific American's 60-Second Science, I'm John Rennie