Human-Like Ability, Categorical Perception, Found In Insects
...r "pa" repeated over and over; they pay attention again when the experimenter throws in a dishabituating "ba." Repeated stimulation at 20kHz habituated Wyttenbach's crickets, and each time they steered less and less vigorously from the speaker. (In the real world, that habituated response would have ple...Study Examines How Mechanisms Evolve To Regulate Bee Development
...nd theiroffspring are drones. Sons of fast workers again grew up fast, suggesting,Robinson said, that drones and workers have similar control mechanisms intheir brains, even though their functions in bee society are totally different. The work, funded by the National Institute of Mental Health and the U.S...Bigger Biology Tackled Through Keyboards
...bors than randomstrangers they expect never to see again and that this can help explainhow altruism has evolved. "It's a strategy of, if you scratch my back, I'll scratch yours,"Hastings said. Different strategies for interacting (cooperating for mutualgain or competing for advantage) can be put into math...Isle Royale Moose Continue Decline
...han the all time low of 12 recorded in 1988-89 and again in 1991-92. "Seven pups survived from last year's litters, so despite five deaths during the year, the total number of wolves increased by two," he says. "The East Pack produced two young, the Middle Pack successfully raised three pups, and a lone pa...New Vaccine Blocks Viral Entry In Cattle, May Have Implications For Human Vaccines
...uses, which hide in the body and can become active again during periods of stress. Current herpes vaccines don't keep out viruses either. Letchworth's approach builds on scientists' growing understanding of the role mucous membranes play in viral infections. "When you think about it, most viruses enter ...Hot 'Lanta: NASA, School Kids Team To Study How Trees Help Cities Keep Their Cool
...AS will be flown about solar noon (1 p.m. EDT) and again about midnight to get true "before and after" pictures. Theaircraft will fly north and south to cover a 30-mile (48 km) square centered on Atlanta. In addition to kids at 10 schools - the heat island experiment will involve water vapor data taken by...New Evidence For Corn's Ancestry Could Lead To Insect And Drought Resistant Crops
... of Economic Botany . She will report on her work again at anAugust meeting of the American Institute of Biological Sciences in Montreal. If Tripsacum is indeed a corn ancestor, then breeders could takeadvantage of some of the special traits of that hardy ubiquitous plant,the Duke botany research scien...Bacterium gobbles up chlorinated pollutants
...d bioremediation protocols. Their mission, funded again by the U.S. Air Force, will take them to military airbases with subterranean pollution problems. Among the bioremediation test sites are a former B-52 airbase in Plattsburgh, N.Y., where planners hope to replace Air Force operations with an eco-indus...Ozone 'Chat Room' Provides Real-Time Air-Quality Research
...one. However, Schichtel says recent analyses once again cast suspicion on the Heartland. "We're seeing some transport from the Midwest, which implicates the Midwest but doesn't prove that it is the source of higher levels," says Schichtel, who bases the observation on measuring wind and ozone data using a...Where Fossils Fear To Tread: Scientists Follow Genes To An Ancient Ancestor
... "Everybody thought the wheel was invented again and again and again," Carroll said, "but there was a single solution and everything is a modification of that.......older men tested first withoutsupplementation then again after one month of testosterone supplementationshowed significant improvement in performance and fewer errors than men testedafter one month on a placebo. Janowsky says the study indicates that sex hormonesupplementation in men may mitigate the loss ...Hormonal Changes At Puberty Can Mask High Cholesterol In Blood
... Thosechildren will definitely have to be screened again after reaching youngadulthood," says Kwiterovich. The Dietary Intervention Study in Children study found that sexual maturationhad the most powerful influence on cholesterol in boys and girls, having agreater effect than a low-fat diet. The study in...... recovered from the reaction and it can be re-used again in other reactions. Consequently, as a bonus there are no toxic residues to dispose of. The team will use their new catalyst to make rings important to the drug discovery process. A presentation on this work at a special event held at the House of...Premies' Lung Disorder Can Cause Developmental Delays
... from the Maternal and Child Health Bureau to look again at these children, who were born in 1989 and are now 8 years old. "We know from the research literature on premies in general that these kids at school age have more learning disabilities. We want to find out whether these motor problems persisted wh...Scientists Work To Restore Native Fish And Habitat To Great Lakes
...es sport and commercial fishers, may flourish once again in all of the Great Lakes if a new research, restoration and management effort proves effective, according to U.S. Department of Interior biologists and fishery experts. The Fiscal Year 1998 Department of Interior Appropriations Bill contains $1 mi...Good Ergonomics Is Good Economics
... books at Raymond are full and the company is once again enjoying success. Raymond stock has risen from around $6 per share at the start of the project to around $21 today (Alan Hedge, personal communication). TV and VCR remote controls. Thomson Consumer Electronics first developed its highly successful a...Fauci: New Findings Help Explain "Rebound" Of HIV In Patients Who Discontinue Triple-Drug Therapy
...ucing cytokines and other factors once again promote the active production of virus. "The findings underscore the risks involved in discontinuing antiretroviral therapy, even if a patient feels better and has a viral load that is 'undetectable' using standard assays,...Genetics Of Obesity And Of The Response To Chronic Overfeeding
...asured 4 months after the overfeeding protocol and again 5years later. The within-pair resemblance in the post overfeeding changes inbody composition, fat distribution, insulin and plasma lipoprotein levels wasalso quite apparent. These results strongly suggest that undefined geneticfactors are associate...Females' Siren Song Initiates Courtship Duets In African Frogs, Columbia Biologists Find
...dit to male frogs in a fiberglass tank. The males again responded with an answertrill and tried to swim toward the sound, in one case even attempting to matewith the loudspeaker. Ms. Viswanathan conducted these experiments at Columbia'sbiological sciences department. Dr. Tobias discovered the fe...