National Geographic's Sky-High Thrills

National Geographic Adventure Magazine has teamed up with ABC's Good Morning America to bring us the Top Ten Sky-High Thrills. On the list you'll find such cool adventures as Climbing the Grand Tetons in Wyoming, a Zip Line Tour in Durango, Colorado, and and Bungee Jumping on the Bridge to Nowhere in Los Angelas, California. Something for everyone, and a wide variety of activies no less.