Intervals of clouds and sunshine
Rises at 6:20 AM with 13:15 of sunlight, then sets at 7:35 PM
Rises at 4:24 PM with 10:28 of moolight, then sets at 2:52 AM
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.