National Geographic : 1999 Mar
NATIONAL GEOGRAPHIC 0 As si nment GEORGESTEINMETZ * HEART OF THE SAHARA Caravan Man Crossing the Sahara is dangerous business. "People die all the time," says writer Donovan Web ster (above, with Tuareg tribes men in Niger). "That's why you go with someone you trust." Don figured a little technology wouldn't hurt though. "When I mentioned to my guide that I had a GPS [global positioning system] receiver to help us nav igate, he said he didn't need it," says Don. "'I've got TPS,' he told me-Tuareg positioning system. And he did! He could find his way anywhere just by seeing rip ples in the sand. "They were as interested in my world as I was in theirs," Don recalls. "When I showed them a photo of my kids at Niagara Falls, they wanted to keep it. They thought the kids were cute-but they couldn't imagine that much water in the world." NATIONALGEOGRAPHIC(ISSN 0027-9358)ISPUBLISHEDMONTHLYBYTHENATIONALGEOGRAPHICSOCIETY114517THST.N.W., WASHINGTON,D.C.20036-4688. $27.00A YEARFORU.S .DELIVERY,$5.00 PERSINGLECOPY(INCLUDESPOSTAGEAND HANDLING).PERIODICALSPOSTAGEPAIDAT WASHINGTON,D.C., AND AT ADDITIONALMAILINGOFFICES.POSTMASTER:SENDADDRESSCHANGESTO NATIONALGEOGRAPHIC,P.O .BOX 63002,TAMPA,FLORIDA33663-3002.