ScienceDaily Top Science Headlines
for Sunday, December 5, 2010
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Global sea-level rise at the end of the last Ice Age interrupted by rapid 'jumps' (December 4, 2010) -- Researchers have estimated that sea-level rose by an average of about 1 meter per century at the end of the last Ice Age, interrupted by rapid "jumps" during which it rose by up to 2.5 meters per century. The findings will help unravel the responses of ocean circulation and climate to large inputs of ice-sheet meltwater to the world ocean. ... > full story
Blame the environment: Why vaccines may be ineffective for some people (December 4, 2010) -- A new discovery may explain why a tuberculosis vaccine is not as effective for some people as anticipated, and potentially explains why other vaccines do not work as well for some as they do for others. ... > full story
Color-changing 'blast badge' detects exposure to explosive shock waves (December 4, 2010) -- Mimicking the reflective iridescence of a butterfly's wing, investigators have developed a color-changing patch that could be worn on soldiers' helmets and uniforms to indicate the strength of exposure to blasts from explosives in the field. Future studies aim to calibrate the color change to the intensity of exposure to provide an immediate read on the potential harm to the brain and the subsequent need for medical intervention. ... > full story
Molecular 'switch' contributes to cellular aging process: Discovery suggests new treatments for metabolic diseases (December 4, 2010) -- Scientists report finding a molecular "switch" that can "turn off" some cellular processes that are protective against aging and metabolic diseases. ... > full story
Novel metal catalysts may be able to turn greenhouse gases into liquid fuels (December 4, 2010) -- It sounds a bit like spinning straw into gold, but novel metal catalysts may be able to turn greenhouse gases like methane and carbon dioxide into liquid fuels without producing more carbon waste in the process. ... > full story
Molecular mechanism that causes teens to be less sensitive to alcohol than adults identified (December 4, 2010) -- Researchers have known for years that teens are less sensitive than adults to the motor-impairing effects of alcohol, but they do not know exactly what is happening in the brain that causes teens to be less sensitive than adults. But now, neuropsychologists have found the particular cellular and molecular mechanisms underlying the age-dependent effect of alcohol in teens that may cause the reduced motor impairment. ... > full story
Interspecies electron transfer: Anaerobic bacteria found to cooperate (December 4, 2010) -- Microbiologists report that they have discovered a new cooperative behavior in anaerobic bacteria, known as interspecies electron transfer, that could have important implications for the global carbon cycle and bioenergy. ... > full story
New prion discovery reveals drug target for mad cow disease and related illnesses (December 4, 2010) -- In a new study, scientists have found that a protein our body uses to break up blood clots speeds up the progress of prion diseases. This substance, called plasminogen, is a new drug target for prion diseases in both humans and animals. ... > full story
Electrocution of birds and collision with power lines: Solutions to a global problem (December 4, 2010) -- Electrocution on power lines is a major threat to many bird species across the world, in particular endangered species such birds of prey, which show the greatest incidence of electrocution. A new study focuses on preventing bird electrocution through the identification and correction of high-risk pylons. ... > full story
Eye movement problems common cause of reading difficulties in stroke patients (December 4, 2010) -- Eye movement problems that result in difficulty reading are as common as vision loss in stroke patients, researchers at the University of Liverpool have found. ... > full story
Ozone hole affects upper-atmosphere temperature and circulation (December 4, 2010) -- Observations have shown differences in altitude and brightness between polar mesospheric clouds (clouds made of ice crystals in the upper mesosphere) in the Northern Hemisphere and those in the Southern Hemisphere. Various mechanisms have been suggested to explain the differences; a new study shows that the ozone hole in the stratosphere above Antarctica could be playing a key role in the temperature and circulation patterns in the mesosphere. ... > full story
A molecular switch for memory and addiction (December 4, 2010) -- Scientists from Germany, the UK and Italy identify a molecular switch that leads to a sustained increase of calcium in nerve cells and plays a crucial role in the formation of memory and addictive behaviors. ... > full story
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