ScienceDaily Top Science Headlines
for Saturday, August 2, 2008
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Ivory Poaching At Critical Levels: Elephants On Path To Extinction By 2020? (August 1, 2008) -- African elephants are being slaughtered for their ivory at a pace unseen since an international ban on the ivory trade took effect in 1989, but a conservation biologist believes there is little outcry because the public seems to be unaware of the giant mammals' plight. ... > full story
Gene May Put Women With Migraine At Increased Risk Of Heart Disease And Stroke (August 1, 2008) -- Women who experience migraine with aura appear to be at an increased risk of heart disease and stroke if they have a certain gene, according to a study published in Neurology. ... > full story
Aging Impairs The 'Replay' Of Memories During Sleep (August 1, 2008) -- Aging impairs the consolidation of memories during sleep, a process important in converting new memories into long-term ones, according to new animal research in the July 30 issue of the Journal of Neuroscience. The findings shed light on normal memory mechanisms and how they are disrupted by aging. ... > full story
Mitochondrial DNA Copy Number Associated With Risk Of Kidney Cancer (August 1, 2008) -- Genetic factors were shown to influence the number of copies of mitochondrial DNA (mtDNA) in healthy cells. A lower mtDNA copy number was associated with an increased risk of renal cell cancer in a case-control study. ... > full story
Climate Change Science Program Issues Report On Climate Models (August 1, 2008) -- A new report evaluates computer models of the Earth's climate and their ability to simulate current climate change. ... > full story
Male Fish Deceive Rivals About Their Top Mate Choice (August 1, 2008) -- When competitors are around, male Atlantic mollies try to hide their top mate choice, reveals a new study. They feign disinterest in females after onlookers enter the scene. What's more, after encountering a rival, the tricky males direct their first sexual advances toward females that really aren't their first pick. ... > full story
Cold And Ice, Not Heat, Episodically Gripped Tropical Regions 300 Million Years Ago (August 1, 2008) -- Geoscientists have long presumed that, like today, the tropics remained warm throughout Earth's last major glaciation 300 million years ago. New evidence, however, indicates that cold temperatures in fact episodically gripped these equatorial latitudes at that time. ... > full story
Autopsies Reveal Changes To DNA In Major Depression And Suicide (August 1, 2008) -- Autopsies usually point to a cause of death but now a study of brain tissue collected during these procedures, may explain an underlying cause of major depression and suicide. Scientists found proteins that modify DNA directly are more highly expressed in the brains of people who commit suicide. ... > full story
Virus Behind Mysterious Parrot Disease Identified (August 1, 2008) -- Researchers have identified a virus behind the mysterious infectious disease that has been killing parrots and exotic birds for more than 30 years. ... > full story
MicroRNA Implicated As Molecular Factor In Alcohol Tolerance (August 1, 2008) -- A new study in the journal Neuron indicates that microRNA may influence the development of alcohol tolerance, a hallmark of alcohol abuse and dependence. ... > full story
Researchers Identify An Important Gene For A Healthy, Nutritious Plant (August 1, 2008) -- Biologists have found a gene required for both efficient photosynthesis and for iron metabolism, processes necessary for producing a healthy plant and a nutritious food source. This research is part of a larger effort to learn how plants take up essential nutrients from the environment as they grow. ... > full story
Heat-related Deaths In High School Football Players Dip, But All Are Preventable (August 1, 2008) -- You could say two is a small number. But that's still two too many for one professor of exercise and sports science who has researched the topic of heat-related deaths in high school football players. ... > full story
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