... discovered a flute crafted from the thigh bone of a cave bear. Stone tools of Neanderthal manufacture were found nearby. The flute is dated between 43,000 and 82,000 years old and is the oldest-known, deliberately manufactured musical instrument ever found. (Folger, Tim, and Menon, Shanti; "Strong Bones, and Thus Dim-Witted? Or Much Like Us?" Discover, 18:32, January 1997.) Really stale chewing gum! The journal Nature recently printed the photograph of a tooth-marked wad of chewing gum said to be 6,500 years old. This particular wad came from a Swedish bog, but similar wads have been found all over Northern Europe. Not having access to South American chicle, ancient confectioners made the gum from birch bark. Birch bark was also the source of the tar primitive humans used for gluing and waterproofing. E. Aveling, University of Bradford, has concocted a fresh batch of birchbark gum for a taste test. (No one volunteered to try the "old" stuff!) She reported that it is neither pleasant nor unpleasant, but neither are modern-day Moxie and Vegamite. The tooth impressions on the ancient gum wads prove that they were chewed mainly by children and teenagers -- probably to annoy their parents. (Battersby, Stephen; "Plus C'est le Meme Chews," Nature, 385:679. 1997.) Comment. So far there is no evidence to prove that the ancient gum-makers had progressed to the more sophisticated level of bubble- ...

... S . Navy began operating a 90-kilometer-long radio antenna stretching pole-to-pole through a Michigan forest. Broadcasting at only 76 hertz, this long antenna can communicate effectively with submerged submarines. Although the antenna produces electromagnetic fields about the same as those from a large household appliance, some of the trees adjacent to the antenna have enjoyed an unexpected spurt in growth, according to D. Reed and G. Mroz of the Michigan Technological University. "The researchers have been gathering data on the growth of trees since 1985, making measurements at two sites, one near the antenna and the other 50 kilometers away. The results seem to suggest that the electromagnetic field has a subtle influence on the forest. They found that two species of trees, northern red oak and paper birch, do not seem to be influenced by the antenna at all. But red pines near the antenna grew taller than red pines at the distant site, while aspen and red maple grew thicker than their counterparts further off." (Kiernan, Vincent; "Forest Grows Tall on Radio Waves," New Scientist, p. 5, January 14, 1995) Trees are not the only plants affected. Algae in the upper Ford River, where the field is only 10% as strong as that near the antenna, increased chlorophyll production sharply after the antenna started operation. The cause of the growth spurts in trees and algae is still a mystery. (Holden, Constance; "EMF Good for Trees?" Science, 267:451, 1995.) From Science Frontiers # ...