ScienceDaily Environment Headlines
for Saturday, July 31, 2010
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Unexpected viral 'fossils' found in vertebrate genomes (July 30, 2010) -- Over millions of years, retroviruses, which insert their genetic material into the host genome as part of their replication, have left behind bits of their genetic material in vertebrate genomes. In a recent study, a team of researchers found that human and other vertebrate genomes also contain many ancient sequences from Ebola/Marburgviruses and Bornaviruses -- two deadly virus families. ... > full story
Plant compound resveratrol shown to suppresses inflammation, free radicals in humans (July 30, 2010) -- Resveratrol, a popular plant extract shown to prolong life in yeast and lower animals due to its anti-inflammatory and antioxidant properties, appears also to suppress inflammation in humans, based on results from the first prospective human trial of the extract. ... > full story
Snake venom studies yield insights for development of therapies for heart disease and cancer (July 30, 2010) -- Researchers seeking to learn more about stroke by studying how the body responds to toxins in snake venom are this week releasing new findings that they hope will aid in the development of therapies for heart disease and, surprisingly, cancer. ... > full story
Rocks on Mars may provide link to evidence of living organisms roughly 4 billion years ago (July 30, 2010) -- A new paper reveals groundbreaking research on the hydrothermal formation of Clay-Carbonate rocks in the Nili Fossae region of Mars. The findings may provide a link to evidence of living organisms on Mars, roughly 4 billion years ago in the Noachian period. ... > full story
Audubon's first engraving of a bird discovered (July 30, 2010) -- In 1824, John James Audubon (1785-1851), the eminent American artist, created a drawing of a running grouse for use in the design for a New Jersey bank note. Although the artist mentions the drawing and the resulting engraved paper money in two separate diary entries, no one has ever been able to locate or identify such an illustration. Until now. ... > full story
Black carbon implicated in global warming (July 30, 2010) -- Increasing the ratio of black carbon to sulfate in the atmosphere increases climate warming, suggests a new study. ... > full story
Chemicals are likely cause of feminization of fish present in two rivers in Alberta, Canada, researchers find (July 30, 2010) -- Chemicals present in two rivers in southern Alberta are likely the cause of the feminization of fish, say researchers. ... > full story
Some trees 'farm' bacteria to help supply nutrients (July 30, 2010) -- Some trees growing in nutrient-poor forest soil may get what they need by cultivating specific root microbes to create compounds they require. These microbes are exceptionally efficient at turning inorganic minerals into nutrients that the trees can use. ... > full story
Best hope for saving Arctic sea ice is cutting soot emissions, say researchers (July 30, 2010) -- Soot from the burning of fossil fuels and solid biofuels contributes far more to global warming than has been thought, according to a new study. But, unlike carbon dioxide, soot lingers only a few weeks in the atmosphere, so cutting emissions could have a significant and rapid impact on the climate. Controlling it may be the only option for saving the Arctic sea ice before it all melts. ... > full story
Researchers study benefits of white button mushrooms (July 30, 2010) -- Scientists have conducted an animal-model and cell-culture study showing that white button mushrooms enhanced the activity of critical cells in the body's immune system. ... > full story
Migrating birds can’t control themselves (July 30, 2010) -- During the spring and fall migratory seasons, sparrows become significantly less capable of resisting temptation. Researchers investigated impulse control and sleep in white-crowned sparrows during migratory and non-migratory seasons. During migratory periods, the birds slept very little and became more impulsive, but sleep loss itself was not entirely to blame for their impulsivity. ... > full story
Polarstern expedition: Autonomous underwater vehicle dives under the Arctic ice (July 30, 2010) -- The Alfred Wegener Institute for Polar and Marine Research in the Helmholtz Association for the first time sent its Autonomous Underwater Vehicle (AUV) on an under-ice mission at about 79° North. The four-metre-long, torpedo shaped underwater vehicle was deployed from the research icebreaker Polarstern under heavy pack ice. The vehicle was subsequently recovered by helicopter. ... > full story
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