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A thunderstorm this afternoon
Mostly cloudy and humid
Partly sunny and delightful
of sunlight, then sets at
of moolight, then sets at
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.