As the grasslands change and disappear, what happens to the birds?
...as agriculture and increased human settlement have changed a once common landscape into one of the most endangered ecosystems in North America. A team of ecologists set out to discover how changes to the region have affected birds living in the middle of the continent. The results of their work have been p......nce NTP was established in 1978, its reports have changed how substances are handled in occupational and home settings, and in the more general environment. Some examples of chemicals that have been found to cause tumors in laboratory animals and have subsequently been regulated or dropped from use, are: ...Lake Titicaca study sheds new light on global climate change
...o by determining how water levels in Lake Titicaca changed during the last 25,000 years. The researchers used a variety of techniques to analyze the salinity, chemistry and microfossil content of the ancient lakebed. The most direct method involved counting fossilized diatoms - microscopic single-celled al...Established ecological relationship is flawed says new study
...res squared (km2). They found that the power value changed systematically with area. At small scales, where individual plants interact with one another, species accumulated relatively slowly. Likewise at large scales (more than 100 km2) species accumulated with area relatively slowly. It was at intermediate ...Dr. Thomas Starzl receiving prestigious King Faisal International prize this week in Saudi Arabia
... about transplant tolerance, which have completely changed the face and conventional paradigms of transplant immunology, particularly with respect to how and why organs are accepted. "Dr. Thomas Starzl's pioneering efforts in all aspects of organ transplantation over the past 41 years have elevated this fiel......s remains at 50 percent - a statistic that has not changed since the Civil War. Although there has been a reduction in mortality for those injured persons reaching full medical care, many casualties die before ever arriving at a triage unit. This is about to change. Last December the Food and Drug Administr...Pollen record from Chilean lakes indicates global "togetherness" during last ice age
...ird pattern was suggested, indicating that climate changed first in the Southern Hemisphere. To help answer t...at mid-latitude climate in the Southern Hemisphere changed in unison with the North Atlantic region. We are continuing to verify that pattern with an ongoing s...How sensitive is your brain to alcohol-induced damage?
...McLuhan published "The Medium is the Message." It changed the way people thought about the impact of television, and the future of communication. Symposium findings from the June 2000 Research Society on Alcoholism meeting in Denver suggest that alcohol-induced brain injury may be the medium for the progre...Scientific theory of marine reserves to be released
... of ecological data on this issue, and have really changed the way we look at marine reserves, said Steven D. Gaines, a member of the NCEAS group and director of the Marine Science Institute at UC, Santa Barbara. NCEAS happens to be located near a protected ocean area, the National Channel Islands Marine S...Disconnect between skin cells implicated in common skin cancer
...esearchers at the University of Chicago profoundly changed the skin and caused it to behave like a pre-cancerous condition called squamous cell carcinoma in situ. Squamous cell carcinoma is one of the two most common forms of skin cancer with more than one million cases reported in the United States each yea...Darwinian evolution of reproductive proteins in mammals
...searchers found that some segments of the proteins changed significantly faster than neutral, indicating posi...tify the particular parts of the proteins that had changed rapidly during evolution. "Remarkably, one of the regions of the egg-surface protein ZP3 that we de...One change in farming makes for cleaner waterways
...lts to how farming practices changed in the area during the same time. Water quality improved with the adoption of farming practices that reduced the amount of fertilizers and ...New insights into Earth's biological record
...land and the ocean and how carbon distribution has changed over time. The Update will be held on Thursday, March 29, at 2 p.m. EST in the James E. Webb Auditorium at NASA Headquarters, 300 E St. SW, Washington, DC. It will be moderated by Dr. Mary Cleave, Deputy Associate Administrator for Earth Science, NAS...Mechanism for generating autoimmunity-suppressing cells identified
...f, Caton says. However, their properties have been changed so that instead of responding to stimulation by dividing and directing the elimination of infected cells, as a normal T cell does, they instead suppress the local immune response. In the future, Caton and his research team intend to explore how ...UNC scientists find U.S. children snack more now than they did two decades ago
...ientists wanted to learn whether U.S. children had changed their snacking habits over time. They also wanted to know how the changes might -- or might not -- contribute to the nationwide child obesity epidemic. Information they analyzed came from the 1977-78 Nationwide Food Consumption Survey and both the 1...Saline solution a serious threat to wetlands
...ears the hypermarine south lagoon system will have changed to an estuarine system," said Dr Paton. "How will plants and animals respond? I expect lots of fresh water birds will be using it, but few hypermarine birds, and Ruppia gives us a clue to what will happen," he said. Ruppia tuberosa grows around the...Researchers prove past cooling trend caused by move from forests to agriculture
... is an example of inadvertent geoengineering -- we changed the reflectivity of the Earth and have probably caused a global cooling in the past. This is now probably being overwhelmed by our greenhouse gas emissions." The research, published in the Geophysical Research Letters, also shows a slight increase i...First dinosaur found with its body covering intact; displays primitive feathers from head to toe
...on insect wings. These fossils have dramatically changed the way we understand what life was like during late Jurassic and early Cretaceous times, said Ji Qiang. How Are Dinosaurs Related to Birds? In the last two decades, other birdlike dinosaurs and dinosaurlike birds have been unearthed at fossil si...Smart polymers provide size-selective switches to turn proteins on, off
...tes on a protein. The idea was that as the polymer changed its properties, it would collapse into a compact globule to block the site, Stayton said. When it extended, it would allow a molecule that recognizes the site to attach. And if you collapsed the polymer and a molecule were already attached, the c...DNA gene chips and novel software used to describe kidney development
... genes present on the DNA chips that significantly changed expression during development. These genes clustered into five distinct groups, based on their peak expression during development: The first stage of development focused on proliferation with many genes involved in DNA, RNA and protein production....