Intervals of clouds and sun
Rises at 6:15 AM with 13:30 of sunlight, then sets at 7:45 PM
Rises at 4:30 AM with 13:58 of moolight, then sets at 6:28 PM
Aug 30, 2012; 5:00 AM ET If you're longing to ski the Alps or swim in the Great Barrier Reef, you may be running out of time. A changing climate may beat you to the punch line. Valerie Smock has more.