NPR: 05-15-2008 Environment

Stories: 1) White House Lists Polar Bears as 'Threatened' 2) Alex Chadwick Takes a Sweaty Ride 3) Nissan Builds Buzz with Plans for Electric Car 4) Lexus Flies McCartney's Hybrid to England 5) Geology, Engineering Contribute to Quake Damage 6) Polar Bear Endangerment Decision Looms