ScienceDaily Environment Headlines
for Saturday, August 23, 2008
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Some Cells Self-destruct For The Greater Common Good (August 22, 2008) -- Individual cells in a population of bacteria can sacrifice their lives for others to achieve a greater common good. Biologists have described a new biological concept in which self-sacrifice and self-destruction play an important role. ... > full story
With Skate Eyes, Scientists Peer Into Human Disease (August 22, 2008) -- Paradoxically, the photoreceptor cells in our retinas release more of their neurotransmitter, glutamate, in the dark, when there is nothing to see, than they do in the light. This is doubly surprising since although glutamate is a major signaling molecule in the retina and throughout the central nervous system, it is also a potent cytotoxin that, in large doses, can kill nearby cells. ... > full story
Malaria Researchers Identify New Mosquito Virus (August 22, 2008) -- Researchers have identified a previously unknown virus that is infectious to Anopheles gambiae -- the mosquito primarily responsible for transmitting malaria. ... > full story
New And Improved Test For West Nile Virus In Horses (August 22, 2008) -- A new test for West Nile virus in horses that could be modified for use with humans and wildlife may help track the spread of the disease. ... > full story
Climate Change Could Be Impetus For Wars, Other Conflicts, Expert Says (August 22, 2008) -- Some international-security experts say that climate-change-related damage to global ecosystems and the resulting competition for natural resources may increasingly serve as triggers for wars and other conflicts in the future. ... > full story
Turning Up The Heat On Tomatoes Boosts Absorption Of Lycopene (August 22, 2008) -- Turning up the heat on the red tomato during processing has the potential to give the popular garden staple added disease-fighting power. Scientists have found that lycopene molecules in tomatoes that are combined with fat and subjected to intense heat during processing are restructured in a way that appears to ease their transport into the bloodstream and tissue. The tomato is the primary food source of lycopene, a naturally occurring pigment linked to the prevention of cancer and other chronic diseases. ... > full story
Manes, Trains And Antlers Explained: How Showy Male Traits Evolved (August 22, 2008) -- For Charles Darwin, the problem of the peacock's tail, in light of his theory of natural selection, was vexing in the extreme. A team of Wisconsin scientists has turned from the question of why such male traits exist to precisely how they evolved. They have worked out the molecular details of how a simple genetic switch controls decorative traits in male fruit flies and how that switch evolved. ... > full story
Continued Breakup Of Two Of Greenland's Largest Glaciers Shown In Satellite Images (August 22, 2008) -- Researchers monitoring daily satellite images of Greenland's glaciers have discovered break-ups at two of the largest glaciers in the last month. They expect that part of the Northern hemisphere's longest floating glacier will continue to disintegrate within the next year. ... > full story
Radioactive Waste Recycling No Longer A Pain In The Ash (August 22, 2008) -- A new recycling plant will soon recover uranium from the ashes of radioactive garbage to be recycled back into nuclear fuel using an efficient, environmentally friendly technology inspired by decaffeinated coffee. The technique's future may even hold the key to recycling the most dangerous forms of radioactive waste. ... > full story
Tracing Origins Of Critical Step In Animal Evolution: The Development Of Nerves (August 22, 2008) -- Researchers have traced the origins of one of the most important steps in animal evolution -- the development of nerves. ... > full story
Molecule That Keeps Pathogens Like Salmonella In Check Uncovered (August 22, 2008) -- Scientists have found a potential new way to stop the bacteria that cause gastroenteritis, tularemia and severe diarrhea from making people sick. ... > full story
Dietary Supplements For Horses, Dogs And Cats Need Better Regulation, New Report Says (August 22, 2008) -- The growing use of animal dietary supplements has raised several concerns, including the safety of specific supplements and the approaches taken to determine their safeness. ... > full story
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