class videos

1. Evidence of Extreme Climate
http://www.youtube.com/watch?v=W7a-Hs9UxYo

2. Obama and climate

http://www.youtube.com/watch?v=LbQC_KWjGhI

3. Hansen on extreme climate

http://www.youtube.com/watch?v=TX2KyF0p-xU

4. Extreme Weather and climate change

http://www.youtube.com/watch?v=WpxxPJv6vQs

5. Extreme Weather and climate change

http://www.youtube.com/watch?v=adp6xN7E_Qc&playnext=1&list=PL2456E55F1A834112&feature=results_main