Genetic analysis finds greater threat in frog-killing fungus
...ere areas where previous frog populations had been wiped out by chytridiomycosis. Out of 10 reintroduction attempts over the past four years, seven have failed, the authors said. "Within two years, the healthy frogs we introduced would become infected with the fungus and die," said Knapp. "It's a stunn...First all-African produced genetically engineered maize is resistant to maize streak virus
...ut, in certain years, a farmers entire crop can be wiped out. Now, scientists at the University of Cape Town, South Africa, along with colleagues at the South African seed company, PANNAR Pty Ltd, have developed a resistant variety of maize that they hope will help alleviate food shortages as well as prom...Glimmer of hope for Tahitian tree snails' survival
...tree snail populations have been almost completely wiped out, and three of the islands eight endemic Partula species are officially extinct, a fourth persisting only in captivity. In the new study, the researchers compared the genetic diversity of tree snails that remain in the wild and in captivity to t...Oregon researchers involved in new Clovis-age impact theory
... a comet, set off a 1,000-year-long cold spell and wiped out or fragmented the prehistoric Clovis culture a...of the Tertiary Period, when numerous species were wiped out after a massive asteroid is believed to have struck Mexico's Yucatan Peninsula and the Gulf of M...Reproductive speed protects large animals from being hunted to extinction
...in, for example, why the American bison was nearly wiped out in just a few years of intense hunting pressure with relatively slight habitat change while the white-tailed deer continues to grow in number despite hunting and suburban sprawl. The bison nurses its young for 283 days on average; the deer just 8...Selective amnesia -- How a traumatic memory can be wiped out
...ve shown that a memory of a traumatic event can be wiped out, although other, associated recollections rem...influence of a drug thus meant that the memory was wiped out by the drug, leaving intact the memory associated with the other sound. The researchers also ...Overfishing large sharks impacts entire marine ecosystem, shrinks shellfish supply
...ordes of cownose rays dining on bay scallops, have wiped the scallops out," says co-author Julia Baum of Dalhousie. "This ecological event is having a large impact on local communities that depend so much on healthy fisheries," says Charles Peterson, a professor of marine sciences biology and ecology at ...Overfishing great sharks wiped out North Carolina bay scallop fishery
...hordes of cownose rays dining on bay scallops have wiped the scallops out," said co-author Julia Baum of Dalhousie. "This ecological event is having a large impact on local communities that depend so much on healthy fisheries," said Charles Peterson, a professor of marine sciences biology and ecology at ...The delayed rise of present-day mammals
...ok 10 to 15 million years after the dinosaurs were wiped out before modern mammals - including our ancient human ancestors - were able to diversify and rise to their present-day prominence across the globe, a landmark new study has found. The surprise finding overturns the widely held belief that the anc...Dinosaur extinction didn't cause the rise of present-day mammals, claim researchers
...d theory that the Mass Extinction Event (MEE) that wiped out the dinosaurs 65 million years ago prompted th...st 10 or 15 million years after the dinosaurs were wiped out, present day mammals kept a very low profile, while these other types of mammals were running th...Researchers warn milk eliminates cardiovascular health benefits of tea
...at tea has on the cardiovascular system is totally wiped out by adding milk. Tests on volunteers showed that black tea significantly improves the ability of the arteries to relax and expand, but adding milk completely blunts the effect. Supporting tests on rat aortas (aortic rings) and endothelial (lining...How trees manage water in arid environments
...nore it, the water will just stay there until it's wiped up. In Arizona, she said, if you need a particular garment on short notice and it's in the laundry, you can wash it by hand and hang it outside. It will be dry in 15 minutes. Not in Indiana. In semi-arid environments such as the southwestern Unit...'Home run' study on spread of disease published
...nvasions. He explained that the imported snail has wiped out the native snails, changing the ecosystems of the Northwest. "Little did the American oystermen of the early 1900s know that their activities could impact local fisheries one hundred years later," said Kuris. "Oyster aquaculture brought in man...Coral stress 'like never in history'
... in Papua New Guinea show how often the reefs were wiped out by disastrous events in past times. "What we found was in stark contrast to what we see in the modern day," says Ass. Prof. Pandolfi. "The frequency of reef [die-off] events in the fossils is at least an order of magnitude less than it is today...Preventing graft-versus-host disease disease after bone marrow transplant -- without toxicity
...ils, the very white blood cells that are virtually wiped out by pre-transplant chemotherapy. Studies in mice had shown that blocking endotoxin reduces the incidence of GVHD after chemotherapy and HSCT.(2) Intrigued by these findings, Levy and Guinan began to study endotoxin and BPI in human patients und...Ebola-outbreak kills 5000 gorillas
...ecotourism revenue to local people. Ebola not only wiped out the habituated gorillas at Lossi, it also neutralized years of ecotourism investment in neighbouring Odzala National Park by devastating gorilla populations there. "We are in a period where relatively modest investments in both Ebola control an...Dramatic shift from simple to complex marine ecosystems occurred 250M years ago at mass extinction
...inction about 250 million years ago, an event that wiped out an estimated 95% of marine species and 70% of ...e explosion of animal diversity. The asteroid that wiped out the dinosaurs couldn't manage that." Lidgard added, "When Pete walked into my office with his p...Fake pesticides threaten food safety
...icide. In 2004, hundreds of hectares of wheat were wiped out in France, Italy and Spain because of a fake herbicide. And a 2002 study of supermarket produce in the UK found traces of eight illegal and potentially dangerous compounds. 'Generally, speaking, it would be wrong to blame farmers [for buying th...Mass extinction's cause: 'Sick Earth'
...c extinction, as it is called, is not the one that wiped out the dinosaurs. Nor does the cause appear to have been a meteorite strike, as in that famous event. The most likely explanation for the disappearance of up to 90 percent of species 250 million years ago, said David Bottjer, is that "the earth got......usual to the Congo Basin though poaching may have wiped out the population. The Savanna landscape still supports such rare species as Grimm's duiker (a small antelope species), side-striped jackal, and rare birds including Denham's bustard. Inside its forests roam elephants, forest buffalo, bush pigs, l...