a scleroprotein that is the principal constituent of epidermis, hair, nails, horny tissues, and the organic matrix of the enamel of the teeth. Its solution is sometimes used in coating pills when the latter are desired to pass through the stomach unchanged.
Official records aren't kept of BASE jumps, but Aiello estimates that 10,000 people around the world have jumped at some point. The number of weekly BASE jumpers is probably about 1,000 and another 1,500 people may jump a couple times a year.Aiello stopped counting his BASE jumps after his 1,000th in 2003.ost regular BASE jumpers have probably flown in a wingsuit at some point, but only a small number regularly jump in one, Aiello said. Of that number, only 20 to 50 people in the world practice the type of terrain flights Potter did, flying through canyons and just inches from rock walls and treetops.
BASE jumping, also sometimes written as B.A.S.E. jumping, is parachuting or wingsuit flying from a fixed structure or cliff. BASE is an acronym that stands for four categories of fixed objects from which one can jump: building, antenna, span, and Earth (cliff). On August 26, 1992 Nic Feteris and Glenn Singleman (two Australians) made a BASE jump from an altitude of 20,600 feet (6286 meters) jump off Great Trango Towers Pakistan. 2  It was the world's highest BASE jump off the earth at the time.