DNA Techniques Allow Scientists To Become Pollution Detectives.
...e tohelp us develop management plans for different sources ofpollution."...Hawaiian Whales Show 'No Overt Response' To Sounds Of ATOC Simulation
... condition of federal permits to operate the ATOC sources is that if adverse effects are noted among marine mammals, the experiment will be modified or halted. "ATOC is an important international study that can tell whether global climate conditions are changing, not only for those of us on the surface...Human-Like Ability, Categorical Perception, Found In Insects
...ing cacophony, Wyttenbach said, but only two sound sources really matter: other crickets, calling at 4 to 5 kHz (4-5 kilohertz, the familiar chirping that is just above the highest note on the piano), and insect-eating bats, emitting ultrasound that helps echolocate their prey at 25 to 80 kHz (humans with g...Duke Ecologist Says Logging Is Creating 'Mahogany Deserts'
...mes, she said. Those older trees can then provide sources of seed to grow new mahoganiesin the clearings opened up by wind and fire. The regeneration process may be even more complicated. In a recent revisitto Quintana Roo, Snook found that mahogany seeds can actually successfullygerminate and begin growin...Antarctic Science Season Gears Up With Searches for Meteorites, Neutrinos, and New Life Forms
... based at the South Pole. AMANDA seeks to map the sources of the ghostly subatomic particles called neutrinos -- whether they come from active galactic nuclei, supernovae remnants, pulsars, neutron stars, or from elsewhere in or outside the galaxy. Such studies are at the forefront of the new field of neut...Scientists Trek to Africa for Biosphere-Atmosphere Chemistry Study
...RESSO project is providing a comprehensive look at sources and sinks of ozone and other oxidants in the tropics," says Cliff Jacobs, program director in NSF's division of atmospheric sciences, which funds NCAR and EXPRESSO. "The central Africa region is one of several areas in the world that play an influen...Duke's Russian Laser Making Ultraviolet Light And Gamma Rays
...reverse reaction because gamma ray beamsfrom other sources have lacked enough intensity, said Henry Weller, anotherDuke physics professor and TUNL researcher. Because gamma rays are generated more efficiently inside its optical cavity,the OK-4's gamma intensity could be 1,000 times higher than those availab......ts that can't wait to share newly-discovered food sources with their kin. As reported in the November 1996 ...ir plastic labyrinth with several alternative food sources -- in addition to the ones the scouts had discovered -- to learn how recruits find their way to the ...Selenium Supplements Can Reduce Cancer Rates
...r essential nutrients. The most important dietary sources of selenium are meats, fish and cereals; dairy products and eggs contribute significant amounts. Some nuts can also be high in selenium if they were grown in high-selenium areas. Of the 40 nutrients currently recognized as essential for human nutriti...Learning From Birds And Bees: Engineers Study Insects For Ideas On Tiny "Micro Air Vehicles"
...o dangerous to use. Batteries or other electrical sources offer another challenge, as doguidance and navigation systems -- and the tiny payloads that willtransmit television images or sniff the air for contaminants. Recentadvances in micro electro-mechanical systems (MEMS) and microelectronicstechnology gi...Teens Shop "Healthy", But Trust Label Claims Too Much
...el claims were unreliable. Now, they are reliable sources of information but the adult public distrusts them." The Penn State results on teenage shoppers are reported in the current (Spring 1997, Vol. 32, No. 125) issue of the journal, Adolescence, in a paper titled "Food Shopping and Label Use Behavi...Two Parasitic Wasps Show Promise For Controlling Pest Flies
...anure, spilled feed, along fence lines, near water sources and waste pilesof straw and hay at feedlots. The scientists then looked for the presenceof either emerging flies or the parasites that kill them. The predominant parasites that kill flies are tiny wasps. As in themovie "Alien," the wasps lay their...Nutrients, Ground Water, And The Chesapeake Bay - A Link With Pfiesteria?
...ke Bay from 'point' and 'non-point' sources. Point sources of nutrients (phosphorus and nitrogen)are from was...reatment plants or industrial locations. Non-point sources of nutrients are more difficult to identify; they originate from agricultural, urban, suburban, or a...Purdue Study Finds Prehistoric Couch Potato
...southern dinosaurs may have had more abundant food sources or a landscape that favored ambushing, factors that could have reduced the pressure to become more active. "Whatever the reason, the fact that they eventually did catch up with the northern dinosaurs suggests that there was an optimal level of respir...Many Dog Foods About Equal In Nutritional Value, Researchers Say
...raw poultry. Overall, by-productsin feed are good sources of digestible nutrients, the authors concluded. The poultry by-product effect, Fahey said, probably resulted from extraneousmaterial, such as feathers and egg shells being included in the feed. By-productsare rendered edible by cooking them at high...Are CDC's 1997 Recommendations For Targeted Lead Screening Of Children Justified?
...rough regulation, but eradication of the remaining sources of lead will bemore difficult given that the primary source of lead exposure for children isdeteriorating lead-based paint in older homes. So despite the decline in BLLs inthe population as a whole, young children who live in older housing, or who ar...Termites' Attraction To Small Amounts Of Carbon Dioxide Lures Pests To Their Deaths
...,such as luring termites to monitoring traps or to sources of insecticides. Slowreleases of CO2 could also be used to confuse termite behavior to the pointwhere a colony cannot sustain itself. The breakthrough even may haveapplications in new home construction. Bjostad's lab plans to conduct experim...Cellular 'Short Circuit' Causes Insulin Resistance
...ecting the environment, and harnessing alternative sources of energy are high priorities. Weizmann Institute news releases are posted on the World Wide Web at http://www.weizmann.ac.il and also at http://www.eurekalert.org ....Scientists Work To Restore Native Fish And Habitat To Great Lakes
...lations of native trout and sturgeon to be used as sources of fish for restocking those waters. The Fish & Wildlife Service and the USGS are working in partnership with the Great Lakes States, Native American tribal governments and the Canadian government through the Great Lakes Fishery Commission. Native ...