National Geographic : 2010 Aug
DEPARTMENTS FOR SUBSCRIPTIONS, GIFT MEMBERSHIPS, OR CHANGES OF ADDRESS, CONTACT CUSTOMER SERVICE AT NGMSERVICE.COM, OR CALL 1 800 NGS LINE 647 5463 . OUTSIDE THE U.S. AND CANADA PLEASE CALL +1 813 979 6845. ngm.com O Down a Blue Hole Our interactive graphic draws you into the underwater caves of the Bahamas and tells how they came to be. On the Cover Extreme climate shifts forged this ancient Bahamian cave as seas rose and fell. Extreme danger awaits divers who explore it. Photo by Wes C. Skiles Inside Geographic 138 Flashback GeoPuzzle Editor's Note 4 Letters 8 Your Shot 12 Visions of Earth 14 THE BIG IDEA Carbon Capture 30 "Artificial trees" might suck planet-warming CO out of the air faster than real ones. WILD Coyote Savvy, Wolf Skills The hybrid eastern coyote hunts deer and rabbits. Should your Chihuahua be worried too? GEOGRAPHY Ready, Set...Map Senator Al Franken can draw the U.S. in minutes. It's a parlor trick---but also a useful skill. FOSSILS Tail Power The glyptodont, an ancient armadillo kin, deftly swung its spiked hind part. OCEANS Squid on the Fly The jumbo flying squid lives a fast and furious life---and it's heading up the California coast. ARCHAEOLOGY A Round Ark A Babylonian tablet offers a different shape for the animal-filled vessel in Flood lore.