For the first time ever, the Supreme Court heard a case on global warming today.  I was fortunate enough to attend the oral arguments and found the whole process fascinating.  Never having taken a law class, some of the arguments went over my head, but I  think I did understood most of it.  

The case was Massachusetts v. EPA, where Massachusetts (and 11 others states) sued the EPA, saying that under the Clean Air Act, the EPA had to regulate carbon dioxide pollution from cars.  Their basic premise was that rising sea levels would harm coastal states (essentially by shrinking them).  

For more, check out these articles from the Associated Press and NPR.