Tag: "earth" at biology news
Dispel the top 10 myths about evolution
...o have yet to accept the ancient legacy of life on earth
as revealed by Darwin and affirmed in countless ways by the generations of science ever since." --Ann Druyan, co-author with Carl Sagan of Shadows of Forgotten Ancestors...
Microbe fixes nitrogen at a blistering 92 degree Celsius
...can pick up enough heat from volcanism deep in the earth
to cause the fixed nitrogen to revert to its gaseous form. Venting water hotter than 30 C contains very little nitrate so organisms in areas where the subseafloor temperatures are higher would lack nitrogen in a form they can use. The discovery of FS...
Satellite radar gauges water levels in Louisiana wetlands
...s in vegetated wetlands. C.K. Shum, professor of earth
sciences at Ohio State, and his colleagues hope to...ssion, led by Doug Alsdorf, assistant professor of earth
sciences at Ohio State . That mission would offer scientists a much wider measurement swath -- more ...
CGIAR climate change research
... In North Africa, farmers build terraced stone and earth
walls, called tabias, across the beds of steep wadisdry gullies that flood during rainto collect and retain soil and water that otherwise would be washed down the wadis. The tabias retain enough moisture in the captured soil to grow olives and barle...
Scientists uncover speedometer for crystal growth controlled by biomolecule properties
...at they are believed to have important controls on earth
climate, form fully developed and exquisitely shaped skeletons within a few hours. In the December 4-8, 2006, online Early Edition of the Proceedings of the National Academy of Sciences, Virginia Tech Postdoctoral Scientist Selim Elhadj and Profes...
Dramatic shift from simple to complex marine ecosystems occurred 250M years ago at mass extinction
experienced its biggest mass extinction about 250 million years ago, an event that wiped out an estimated 95% of marine species and 70% of land species. New research shows that this mass extinction did more than eliminate species: it fundamentally ch...
Remote latrine reconfirms the presence of Essene sect at Qumran
...ntire area looked like somebody had plowed it, the earth
was so nice and soft, while the rest of the desert was very hard," he said. "In fact, I broke my pick collecting control samples from the other areas." Zias and Tabor also note that the settlement's unusual latrine practices may be clues in solving ...
Scientists urge collaborative action to address effects of global environmental change
... Create new understanding of key components of the earth
system and their dynamic interactions, and address uncertainties and risks; Take responsibility to mobilise knowledge for action, and provide society with the scientific information to better meet present and future needs within the context of susta...
Reef warns of sea level rise
...alcolm McCulloch, deputy director of CoECRS and an earth
scientist at The Australian National University. "The reef lies about 2.5 metres above the current high tide zone, which means that for it to survive and grow, sea levels would have had to be at least 3 to 4 metres higher than at present. "There is...
UCSD scientists establish connection between life today and ancient changes in ocean chemistry
...notes that, "such studies linking the study of the earth
sciences with that of the life sciences are limited and certainly no one has previously looked at this exciting area from the perspective of protein structure. We hope this will encourage others to undertake such interdisciplinary work."...
Fossil is missing link in elephant lineage
...ch.---A pig-sized, tusked creature that roamed the earth
some 27 million years ago represents a missing link between the oldest known relatives of elephants and the more recent group from which modern elephants descended, an international team that includes University of Michigan paleontologist William J. ...
NSF awards 17 grants for research on biocomplexity in the environment
...s of the interplay between carbon and water in the earth
system (CWES), and five for research on materials use: science, engineering and society (MUSES). CWES grantees were awarded a total of $24.8 million; MUSES grantees were awarded $6.3 million. "CWES and MUSES represent the evolution of programs in th...
Oldest complex organic molecules found in ancient fossils
...olved. Christina O'Malley, a doctoral student in earth
sciences at Ohio State, found orange and yellow or...ish on a stick," said William Ausich, professor of earth
sciences and O'Malley's co-advisor with Yu-Ping Chin, also a professor of earth
sciences. Today's ...
Mass extinction's cause: 'Sick Earth'
...e largest mass extinction in Earth's history? USC earth
scientists will reveal new clues at the annual mee...illion years ago, said David Bottjer, is that "the earth
got sick." Bottjer, professor of earth
sciences in the USC College of Letters, Arts and Sciences, l...
USGS presents a world of science at GSA in Philadelphia
...h and Natural Sciences in Human Health: What does earth
science have to do with human health? Plenty. Re...cent events and research clearly show the need for earth
and human-health sciences to work together and to incorporate non-traditional specialties to bridge ...
$20 million to expand seafloor observatory
...ection and achieve a profoundly better overview of earth
and ocean processes."...
At the core
...y to find answers to historic climate changes from earth
and marine sediment core samples. The XRF (X-ray ..."There is a tremendous amount of information about earth
history preserved in the chemical composition of sediments deposited on the ocean floor, in lakes, a...
Poplar DNA code cracked -- new possibilities for sustainable energy
...fying them genetically. Trees are the lungs of the earth
− but they can be modified, for example, so that they fix CO2 − the major greenhouse gas − more efficiently. New tree varieties can also be made so that, for example, their wood is better suited for paper production....
Ancient Arctic water cycles are red flags to future global warming
...Co-author Matthew Huber, an assistant professor of earth
and atmospheric sciences at Purdue University's College of Science compared data from the research expedition with complex climate-model simulations to study and predict the effects of greenhouse gases. Their measurements confirm that the carbon diox...
Case Western Reserve University paleontologist discovers South American mammal fossils
...e Badlands National Park in South Dakota where the earth
is soil poor and comprised of silty clays, sand and gravel. The area, located at an altitude of approximately 11,500 feet, was susceptible to weather conditions that eroded the rocks and exposed the fossils in the lower portions of the formations at...
1 2 3 4 5 6 7 8