A thick cloud cover
Rises at 6:31 AM with 12:30 of sunlight, then sets at 7:01 PM
Rises at 7:43 AM with 12:03 of moolight, then sets at 7:46 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.