Word: biologist
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...Every biologist knows that females spend a lot of energy making a small number of eggs, while males churn out huge quantities of sperm almost effortlessly. Not so, says a scientist who has studied the sex life of a worm no bigger than an apostrophe. Male soil nematodes that copulate a lot -- and thus produce a lot of sperm -- live only two-thirds as long as fellow worms that copulate but don't make sperm, according to a report in Nature. University of Arizona researcher Wayne Van Voorhies warns that it may be a mistake to make the leap from...
...BOTTOM LINE: A leading biologist's warning about ecological disaster is both top-drawer science and high-level...
...wolf pack has settled in Yellowstone, it could produce four to six pups annually, some of which could survive to disperse and colonize other parts of the park. "That's the way it happens," says Michael Hedrick, a wildlife biologist who monitored wolf packs on the Kenai Peninsula in Alaska. "First you get ambiguous sightings, then someone sees a family, and then the % floodgates open...
...years, predicts biologist Leroy Hood of the California Institute of Technology, doctors will be able to take a blood sample from a newborn infant, extract DNA from the blood and insert it into a machine that will analyze 100 or so genes. "That will give us DNA fingerprints of genes that predispose us to common kinds of diseases," Hood says. Based on the genetic profile, the computer will dispense some medical advice. It might say, "This individual has a tendency toward skin cancer and should avoid overexposure to the sun." Or: "He has insufficient LDL cholesterol receptors and a proclivity...
Assembled by nature and honed by evolution, the convoluted 3-lb. organ positioned between our ears represents a triumph of bioengineering, one that continues to elude comprehension and defy imitation. "The brain," declares molecular biologist James Watson, co-discoverer of the physical structure of DNA, "is the most complex thing we have yet discovered in our universe." The + quest to understand the biology of intelligence is likely to occupy the minds of the world's best scientists for centuries to come. The task may prove more challenging than those alive today suppose, requiring perhaps new breakthroughs in physics and chemistry...