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Drilling Reaches Lake Vostok, Long Trapped Under Antarctic Ice Sheet Scientists said Wednesday they had reached the waters of a lake that has been sealed off for millions of years. Observatory: Tarsiers: Tiny Primates With Ultrasonic Vocal Skills Tarsiers, five-inch-tall creatures found in Southeast Asia, produce calls that are entirely in ultrasound, above the range of human hearing, researchers find. Observatory: Amasia Supercontinent Will Form in the Arctic, Geologists Predict In the past, researchers had guessed that the new continent, often called Amasia, would form either over the Atlantic Ocean near present-day Africa, or 180 degrees away, on the other side of the world. N.R.C. Approves Building of 2 Reactors in Georgia The Nuclear Regulatory Commission voted 4-to-1 to grant a license to build two nuclear reactors in Georgia, the first time the commission had done so since 1978. Meteorite From Mars Is at Home in London, After a World Tour A glossy meteorite that broke off from the Red Planet some million years ago and landed in Morocco last summer passed through many hands before finding a home at the Natural History Museum in London. In Struggling Tupper Lake, Resort Project Creates Rift A project in Tupper Lake, N.Y., was approved after a nearly decade-long tug of war between environmentalists and pro-development residents. Study Explores Electrical Stimulation to Aid Memory A small study shows promise that could lead to clues to encoding memory and treating neurological diseases. Nuclear Commission Expected to Vote on New Reactors The Nuclear Regulatory Commission has not given a license to build since 1978, a year before the Three Mile Island accident in Pennsylvania. Norton D. Zinder, Researcher in Molecular Biology, Dies at 83 Dr. Zinder helped lay the basis for molecular biology in the 1950s and ?60s. To Survive a Quake, New Bay Bridge Span Will Offer Least Resistance The new eastern span of the Bay Bridge in San Francisco is designed to go with the flow if a major earthquake strikes. Joy Reidenberg, Anatomist, Builds a Following on ?Inside Nature?s Giants? A chance call made Joy Reidenberg, a researcher at Mount Sinai School of Medicine who has performed hundreds of dissections on various mammals, a TV celebrity. G.E. Ends Bid to Create a Supply of Technetium 99m Continued obstacles plague the effort to provide a reliable supply of technetium 99m, a radioisotope crucial to identifying heart and kidney disease and assisting in breast cancer surgery. Fallout From Chronic Fatigue Syndrome Retraction Is Far and Wide As the published evidence for the source of chronic fatigue syndrome fell apart, a legal melodrama erupted, dismaying and demoralizing patients and many members of the scientific community. Phys Ed: Phys Ed: Exercise as Housecleaning for the Body The ability of exercise to speed the removal of garbage from inside our body's cells may be one of its most valuable, if least visible, effects, a new study suggests. Essay: Breast Cancer Screening Matters, but Prevention Is the Real Goal Perhaps too much emphasis is placed on looking for existing breast cancer when the search should focus on prevention and the possibility of finding a vaccine.

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