First North Americans Had Chance To Be Avid Birders
... human hands 23,500 years ago. The caves have been protected as a historic site reserve by the Yukongovernment, with the support of the Vuntut Gwitchin First Nation. The new bird evidence raises numerous questions both about both these flyers,and potentially, early humans in Eastern Beringia. Were the migrator...Engineered Corn Can Kill Monarch Butterflies
...ntrol because it bores into the stalk, where it is protected from pesticides.It produces several generations a year. Because it was so difficult to controleffectively with pesticides, annual losses averaged $1.2 billion. Incontrast, Bt -corn provides essentially total season-long control at areasonable cost w...The Sagan criteria for life revisited
...atered surface is a frigid -220o F and is scarcely protected from the ravages of space by a extraordinarily thin CO2 atmosphere. Indeed most astrobiologists concur that Callisto is an unlikely abode for life. But even if Callisto was wet and warm and teeming with life, would Galileo have noticed? The questi...New Key To Saving African Elephants
...is essential because 80% of their range is outside protected areas. Hoare and Du Toit studied how human settle... of northwestern Zimbabwe. About 40% of theland is protected and the rest is divided into three contiguous districts where people have been clearing the elephant...Bruce Babbitt Calls For Linking Open Space And Conservation
... choosebiodiversity hotspots and corridors between protected areas. The best example of this approach is in Southern California, where growthbetween Los Angeles and San Diego was destroying the coastal sagebrush habitatinhabited by the California Gnatcatcher and about 85 other at-risk species. Whenthe gnatcat...USGS Study Confirms An Urban Air-Pollution Problem At Mount Rainier National Park
...nt," and adds to the growing body of evidence that protected areas suchas national parks are vulnerable to pollution from outside sources. The ozone atMt. Rainier, for example, is blown in from Seattle and other urban centers inwestern Washington. Ozone is a natural component of the Earth's atmosphere, but it...Horseshoe crab studies providing new insight into valuable ancient creatures
...rvae.Juveniles of larger ocean fish, which use the protected waters of DelawareBay as a giant nursery, also consume eggs and larvae. Juvenile and adulthorseshoe crabs are a dietary staple for the threatened loggerhead turtle. Human Pressures Horseshoe crabs have long been important to humans as well. Theirrela...New marking system gives scientists first real view of immune memory cells
...ce andexposed them to LCMV, however, they were not protected from the virus.Helen Hay Whitney Foundation and Leukemia Society of America funded thisresearch....Green tea can help prevent rheumatoid arthritis
...n green teapolyphenols in water were significantly protected from the development ofarthritis, and, if they did develop the disease, its severity was mild," Haqqiconcluded....Economic model to aid alligator farmers
...ism andpredation, while farm-raised hatchlings are protected from predators andcannibalism is not a problem because alligators are kept with others of theirown size. In Louisiana, farmers must decide if it is better to return 30 percentof the hatchlings to the wild at three feet, or only 10 percent whe......ma viruses (HPV). Because the mucous membranes are protected by an independent immune system, Dr.Ertl suspects they are not adequately protected by systemic vaccines. Consequently, she and her Wistar research team are designing vaccines thattarg...Lab on a chip? Cheap, disposable UD biosensor uses gold-on-plastic design
...sts say. A prototype, "gold-on-plastic" biosensor, protected by a provisional patent anddescribed in the May 25 issue of Langmuir , also may prove useful foranalyzing food and environmental samples. With a detection region about the size of a living cell, multiple biosensors canbe placed on a single chip, rep...Mosquitofish threaten amphibians
...dthe California treefrog, which is a candidate for protected status. Previous studies have shown that mosquitofish eat amphibians such as Californianewt larvae in Santa Monica Mountain streams. But these studies have beencriticized because the mosquitofish were not offered alternate prey, leavingthem no choic...World's biodiversity becoming extinct at levels rivaling Earth's past 'mass extinctions'
... we retain just fivepercent of tropical forests in protected areas, which will be true within 50years at presen...s, so that it will always beobvious which are well protected in nature -- or so abundant so as not to causeconcern -- and those that are rare and endangered. P...Tiny mites protect vineyards from mildew
...ites and grape plants. The grape plants are being protected fromfungus and plant-feeding spider mites, and the mites are getting protection fromtheir own predators," says English-Loeb. "These types of mutualisms may bequite common in nature, and we may be able to take advantage of them to bettermanage agricu...Early detection of Global Change 'symptoms' on the protected areas to be discussed in Italy
The effects of Global Change on natural protected areas will be the topic of thesymposium "Global Ch... on biodiversity Networking of national parks and protected areas The Abruzzi Parks: a model case study The Abruzzi parks in the framework of the European ...Researchers pave the way to protein therapy in humans
...dy-- including cells in the brain that arenormally protected by the blood-brain barrier," says Steven F. Dowdy, Ph.D., wholed the research team at Washington University School of Medicine in St. Louis.The group published its results in today's issue of Science. Dowdy is an assistant investigator of the...Hurricane Hugo serves as living laboratory for Clemson University forest scientists
...e and endangeredspecies by confining them to a few protected areas is that the destruction ofone such area can severely damage an entire population," said Allan P.C.Marsinko, a Clemson forest resources scientist. While destroying habitats for some species, the storm improved habitatsfor others. For ex...Stressed-out mice offer clues to depression, anxiety, anorexia
...without the CRH-BP gene wereless likely to leave a protected chamber and spent much less time exploring openareas of an experimental maze than did normal male mice. "This test is based onthe animal's natural tendency to explore its environment in the absence of aperceived threat and to retreat to an enclosed ......lyzed fecalprogesterone levels. They found that in protected areas of the greaterYellowstone ecosystem, moose pregnancy rates fell from 90% in 1966 to 75% today,making them among the lowest in North America. This suggests that the drop in youngmoose is not due to wolves and grizzly bears. Rather, the researche...