The Washington Post reported today that “The Senate Environment and Public Works Committee will unveil a bill Wednesday that aims for a 20 percent reduction in U.S. greenhouse gas emissions from 2005 levels by the year 2020” The House bill, authored by Reps. Henry Waxman (D-Calif.) and Edward J. Markey (D-Mass.), would mandate cutting emissions 17 percent by 2020. Both measures would require an 83 percent reduction in greenhouse gases from the 2005 baseline by 2050.

Can a Roller Coaster Cause a Brain Injury? The Answer May Be More Surprising Than You Think
Can you suffer a brain injury on a roller coaster without ever hitting your head? It may sound surprising, but the answer is yes. Recent news reports about the Six Flags X2 roller coaster have brought new attention to the possibility that the forces generated by a roller

