Berlin, March 31 : An international team of scientists has suggested that the largest known mass extinction in the history of the earth could have been triggered off by giant salt lakes, whose emissions of halogenated gases changed the atmospheric composition so dramatically that vegetation was irretrievably damaged.
At the Permian/Triassic boundary, 250 million years, ago about 90 percent of the animal and plant species ashore became extinct.
Sydney, March 31 : A new study has found that stressed mushroom corals can switch from male to female and back again, the first to show that coral can change sex in either direction, all for conserving energy.
According to a report by ABC News, researchers at Tel Aviv University in Israel conducted the study.
Mushroom corals belong to a family called Fungiidae. They are solitary, mobile species that live throughout the Pacific and Indian Oceans.
London, March 31: A new research has shown that unusually bright patches of sky, observed up to several kilometers away from clouds, are a result of the ‘halo effect’, which is light reflected off the cloud and bouncing off the particles in the air.
This seemingly innocuous finding could have a surprisingly big knock-on effect because it means there may be fewer cooling particles in the sky than previously thought, and that could change the way climate change is modeled.
Washington, March 31 : American scientists have created a "switch" that allows mutations or light signals to be turned on in muscle stem cells to monitor muscle regeneration in a living mammal.
The research team, including 2007 Nobel Prize winner Mario R. Capecchi, say that their breakthrough may lead to a genetic switch, or drugs, that allows people to grow new muscle cells to replace those that are damaged, worn out, or non-functional.
Washington, March 31 : Researchers at St. Jude Children''s Research Hospital have found that eye cells believed to be retinal stem cells are actually normal adult cells, and thus therapies to restore vision in people with retinal degeneration should involve other types of stem cells.
Scientists have always believed that retinal stem cells may form the basis for treatments to restore sight to millions of people with blindness caused by retinal degeneration, provided they can be obtained.
Washington, March 30 : A University of Kansas professor is researching details of online relationships forged on social networking sites and determining their significance, depth and potential.
Nancy Baym, associate professor of communication studies, became interested early on in how the Internet shapes interpersonal communication and of late has focused her research on social networking sites in particular.
Berlin, March 31 : An international team of scientists has suggested that the largest known mass extinction in the history of the earth could have been triggered off by giant salt lakes, whose emissions of halogenated gases changed the atmospheric composition so dramatically that vegetation was irretrievably damaged.
Sydney, March 31 : A new study has found that stressed mushroom corals can switch from male to female and back again, the first to show that coral can change sex in either direction, all for conserving energy.
London, March 31: A new research has shown that unusually bright patches of sky, observed up to several kilometers away from clouds, are a result of the ‘halo effect’, which is light reflected off the cloud and bouncing off the particles in the air.
Washington, March 31 : American scientists have created a "switch" that allows mutations or light signals to be turned on in muscle stem cells to monitor muscle regeneration in a living mammal.
Washington, March 31 : Researchers at St. Jude Children''s Research Hospital have found that eye cells believed to be retinal stem cells are actually normal adult cells, and thus therapies to restore vision in people with retinal degeneration should involve other types of stem cells.
Washington, March 30 : A University of Kansas professor is researching details of online relationships forged on social networking sites and determining their significance, depth and potential. 
