Take Note Radio: Global Warming

Researchers now say that climate change didn't happen gradually in the past, and it won't happen that way in the future. On the next Take Note, we'll talk with of the world's leading climate researchers. We'll also talk with a fuel scientist about proposed state regulations for lower emissions on 2008-model cars and what that could mean for you, your car, and for air quality in Pennsylvania. Guests: Richard Alley & Andre Boehman