A Florida native explores some of the Sunshine State's 700-plus springs, which have been keeping Floridians and visitors alike cool through muggy summers long before air conditioning was invented.
10 sites around the globe in trouble, and how you can tread lightly.
» Endangered Planet
Gallery: 10 Endangered Sites
Canadian polar bears, the Tower of London, the Outer Banks: Global warming is affecting them all. We zero in on 10 danger zones.
Video: Touring Greenland's Icy Waters
Scenes from a boat ride past icebergs broken from the Ilulissat Icefjord in the waters surrounding the town of Ilulissat, Greenland.
Video: Viking Ruins
The Viking ruins scattered over southern Greenland embrace both religion and mystery.
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The Great Indoors The frigid reaches of America embrace summer fun with Wisconsin Dells Water Parks as slides, pools and lazy rivers thaw the body and soul.
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Coasts With The Most Biking or hiking, surfing and swimming, everything's better in Kauai with water around.
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Fly South for the Winter Find the sunshine down in the U.S. Virgin Islands to rejuvenate the body, mind and soul or if you're stuck in your office or home, live vicariously through a warm and wet set of images.