Friday, November 27, 2009
Thursday, November 26, 2009
A recent study provides "incontrovertible evidence" for the eruption of the supervolcano Toba on the island of Sumatra 73,000 years ago, an event that deforested much of India and initiated an "instant Ice Age" lasting about 1800 years and which threatened the human race with extinction.
Wednesday, November 25, 2009
Tuesday, November 24, 2009
A new NASA map adds further evidence that an ancient ocean once covered up to one third of Mars' surface, with extensive valley networks that imply heavy rainfall that would feed such a large body of water.
Monday, November 23, 2009
In the latest update of the ten-year Census of Marine Life, about 5600 new species of deep-sea creatures have been identified living below the level where sunlight ceases, ranging from single-cell animals and tubeworms to large squid and crabs.
Sunday, November 22, 2009
Termites have been shown to farm certain species of mushrooms and raise them in sustainable monoculture farms for the benefit of their colonies, even to the point of becoming dependent upon their domestic farming production for food.
Thursday, November 19, 2009
Three new prehistoric crocodile species have been discovered in Africa, two 20-foot-long predators (one with a flat pancake-like head) and one miniature "RatCroc" barely three feet long, revealing a much more diverse crocodilian world that existed 100 million years ago.
Saturday, November 14, 2009
NASA's Lunar Crater Observation and Sensing Satellite (LCROSS) mission that smashed into the Moon's surface about a month ago has revealed evidence of water in the lunar soil—and a significant amount of water instead of just the trace that was expected.
Friday, November 13, 2009
Two unusual Earth-sized dwarf stars have been found with oxygen-rich atmospheres, remnants of the collapse of massive supernovae and missing the hydrogen or helium envelopes that typically shield the oxygen from view.
Wednesday, November 11, 2009
Described as an evolutionary "missing link," a new dinosaur species (Aardonyx celestae) discovered in South Africa could provide insight into how some sauropods transitioned from walking on two legs to four, allowing them to grow to a massive size.
Tuesday, November 10, 2009
Monday, November 9, 2009
NASA's Spitzer Space Telescope has imaged a three-body planetary system surrounding the star HR 8799 that shows evidence of a cloud of fine dust kicked up by collisions among smaller bodies, possibly showing a system still in formation with planets yet to have settled into stable orbits.