Images of enzyme suggest way to improve DNA sequencing
... a bacterium, Thermusaquaticus, that flourishes in hot springs, it can withstand the temperaturechanges necessary for copying. Four genetic letters -- A, T, C and G -- make up the DNA code, and all of thesenucleotides are included in the reaction mixture when Taq is put to work. Butbecause a nucleotide-l...Even in the Amazon jungles, treatment for heat exhaustion is the same as it is right here at home
...enty of fluids and possibly a doctor or two. "It's hot and very humid. It's hard to get a good evaporativ...heatstroke: Your face will beflushed, skin will be hot and dry, and sweating will stop as body temperaturerises. Headache, nausea and dizziness will progre...Cotton fabrics damaged by high dryer temperatures
...25 percent or more, claims Buisson. Not only does hot dryingcause your clothes to wear out faster, it produces more lint, she notes.In many cases, drying time could be reduced by 10 to 20 percent, thus avoidingmuch of the damage, according to Buisson's study. People would have to take theclothes out be......rcent in phytase diets witheither corn type during hot weather. Reducing dietary phosphorus by just 0.1percent had no influence on performance, he says. A comprehensive litter analysis and greenhouse and soil-transport study is thefocus of a second phase of the project, directed by principal investigator...Satellite fire alarms keep watch on raging California fires
...heat radiating from the Earth's surface,and when a hot spot suddenly shows up in a forested area, the computer firealarm goes off. "A great advantage of GOES," said Flynn, "is that it gets data from thesame part of the Earth's surface every 15 minutes. But the real advantageis that the data gets out very...Hurricane Hugo serves as living laboratory for Clemson University forest scientists
...so create new habitatsfor wildlife and break long, hot summer droughts, giving crops a much-neededdrink of water ... if the crops aren't blown away by the wind. "Only now are scientists beginning to recognize the critical importanceof natural catastrophes in ecosystem dynamics," said William H. C...USGS fire research in the southeast
...e under prescribed burning the fires didn't get as hot or intense, and sothey did not climb into the canopy and kill the pines." A study led by Dr. Ken Outcalt, a research ecologist with the U.S. ForestService, found that natural stands that had been burned a few months previous tothe fires sustaine...USGS studies wildfire ecology in the western United States
...formed decisions on where, when, how often and how hot to burn. "To know whether or not to allow a light...f low to moderate-intensity fires, with occasional hot spots of severe fire that open gaps in the forest and clear the way for sequoia regeneration. "The h...Study shows that hydrothermal vents release mercury
...logy, vol 27, p 931). The team calculatesthat each hot spring releases up to a kilogram of mercury each y...gton's colleague Bob Garrett points out that these hot springs arehome to bacteria that turn mercury into its organic form, methyl mercury, whichis easily ...MIT team reports powerful tool for studying sugars
...polysaccharides, materials that are the focus of a hot new field inbiology and that have recently been shown to play key roles in processes fromviral infection to tissue development. The tool, which the researchers willdescribe in the October 15 issue of Science, is a technique for determining thelinear ......November issue of Science , impact on a number of hot topics in evolutionary anthropology, from the origin of modern humans to great ape conservation. The findings also support the idea that cultural differences between chimpanzee populations are probably not the result of genetic variation between thes...Monsanto's modified soya beans don't agree with the heat
...onsanto. Now researchers in the US have found that hot climates don't agree with Monsanto's herbicide-res...y of engineered soya bean that is better suited to hot conditions. ...Study points to chromosome site of autism gene
... study also highlighted several other possible DNA hot spots for autism genes, notably a region on chromosome 7. This latter finding confirms a report last year by an international autism research team. The new evidence also converges with that from another research group for a location in the same regi......a HumanGenome Center in 1991. "Chromosome 22 is a hot spot for disease," said Dr. Emanuel, the chief of Human Genetics andMolecular Biology at The Children's Hospital of Philadelphia. Defects in genes on that chromosome areimplicated in certain leukemias and other cancers, mental retardation, schizophre...... settled into wonderful ecological niches like the hot springs of Yosemite. Radiodurans has been dubbed a polyextremophile because it can endure many extremes, including the most dangerous space hazard, radiation. "Radiation-induced DNA damage is an oxidizing type of damage," Richmond said. It happens w...Human stem cell research leads Science's top ten list of the best scientific advances in 1999
...us years, the Editors of Science have chosen six hot research areas to watch in the millennial year. This year their choices are: enzymes in Alzheimer's disease, river restoration projects, x-ray astronomy, epigenetics, nanocomputers, and polio eradication. The editors also check in on last year's scor...UF nutritionist: Better to vow to eat healthy for new year
...trogen," Bobroff said. "They don't get the kind of hot flashes associated with menopause and soy also is protective against bone loss, as is estrogen." But Bobroff said soy products aren't just important for women. "The phytoestrogens are important for men, because men who eat diets that are high in...Past climate change effects on mammals may mirror global warming impact
...ound 11,000 years ago. It appears that when it got hot and dry the human population dropped dramatically and didn't come back until the late Holocene when the number of sites increase. Human sites are really hard to come by in the middle Holocene." Grayson cautioned that there are several caveats i......Earth will end. That could be when the sun gets so hot that life can no longer survive, when ultimately the ocean boils and surface rocks melt. "There will be a time when there will be no record of life ever having existed on Earth," Brownlee said. He and Ward acknowledge that their assumptions about how......le, made females live longer if they experienced a hot spell early in life but die sooner if they lived at constant room temperature, with no effect on males. "What's really exciting about the study is its relevance to the evolution of ageing," says John Tower, an expert on fruit fly ageing at the Unive...