A perilous passage through volcanic ash Despite a new warning system designed to prevent such encounters, several planes last week made potentially disastrous trips through ash from an erupting Alaskan volcano. The incidents leave many wondering...
Asian roaches enjoying Florida vacation Florida's infestation of flying Asian cockroaches has begun to resemble a bad dream scripted by Franz Kafka. The airborne intruder, Blattella asahinai, has spread to as many as 18 Florida counties since its...
Brain Risk Seen in Sickle Cell Kids A new study indicates that children with sickle cell anemia, already at risk of life-threatening infections and strokes, may also suffer significant neuropsychologic deficits. The researchers find that children...
Explaining and exploiting a winter worry Every spring, farmers in frigid climes reap an irksome harvest of rocks in their fields. Driven up by ice and water, once-buried boulders emerge during winter with enough force to crack roads and foundations,...
Forcing the details of contact charging When two different surfaces are brought into contact and then separated from each other, they often end up oppositely charged. Such electrostatic charging occurs when balloons rub against sweaters, shoes shuffle...
Homing in on the longest animal Paleontologists have started using a shotgun in the hunt for a gargantuan dinosaur dubbed Seismosaurus. The gun is part of an arsenal of sophisticated techniques scientists are now attempting to apply to paleontology....
Land of the midnight melons? Though fresh produce can be flown in to grace Arctic dinner tables this time of year, the costs are high. Indeed, imported $5 cucumbers are not uncommon in Canada's remote north, observes Dennis R. St. George at the University...
Making chicken wire of molecular size Nine years ago, chemist Orville L. Chapman had one question in mind when he traveled to Germany on a fellowship: "If God would give me one molecule to make, what would that molecule be?" His goal ever since:...
Postponing Red-Cell Retirement Each day, without fanfare, an average adult gives birth to about 200 billion new red blood cells. That amounts to 2.3 million cells squeezing through microscopic, bony "birth canals" every second, emerging from their...
Ritual clues flow from prehistoric blood Never mind conventional wisdom; you can get blood from a stone. Anthropologists have extracted the blood of humans, sheep and an extinct form of cattle from the surface of a stone slab at an approximately 10,000-year-old...
SCIENCE NEWS of the Year 1989 Anthropology * Excavations of the Roman Forum indicated Rome was an urban center in the 7th century B.C., much earlier than many scholars had assumed (135: 20). * A recently developed dating technique suggested...
Study upgrades radiation risks to humans Low doses of X-rays and gamma radiation pose a human cancer risk three to four times higher than previously estimated, according to a National Research Council (NRC) report due out in January. Its findings...
The Color of Geometry Pictures and physical models have long played an important role in mathematics. Nineteenth-century mathematicians, for instance, regularly drew pictures and sculpted plaster or wooden models to help them visualize and understand...
The Natural Roots of Fiber Optics Optical fibers will one day thread through most household telephone systems, but they won't be the first light-pipes in your home. You're using millions of fiber-optic elements right now to read this sentence. And...