Wednesday, July 24, 2013
Tuesday, July 23, 2013
unique signature whistle that they respond to by repeating that whistle back to the originator, ignoring other similar vocalizations and supporting evidence of a concept of identity with a distinct "name" for each individual animal.
Monday, July 22, 2013
evidence of land-based life on Earth, pushing back estimates of its first appearance from 500 million years to 2.2 billion years ago.
Saturday, July 20, 2013
megaviruses (Pandoravirus) seemingly found everywhere and of unknown function or effect, some a thousand times larger than a flu virus and with 200 times as many genes with only 6% of those genes known to science.
Friday, July 19, 2013
Tuesday, July 16, 2013
retained their memories of the task after their head had regrown, implying that memory may be stored in other body cells and then imprinted in the new brain as it regenerates.
Saturday, July 13, 2013
physical limit to the resolution possible with the technology.
Friday, July 12, 2013
aware of being watched by other crickets, the first time such social behavior has been observed in invertebrates and revealing an unexpected depth of learning and memory in insects.
Thursday, July 11, 2013
survive in sub-freezing waters of -1.9 degrees Celsius.
Wednesday, July 10, 2013
optical lattice atomic clock that is three times more accurate than current atomic clocks, measuring oscillations from strontium atoms excited by a laser rather than microwave-based cesium fountains with an accuracy of losing only one second every 300 million years.
Tuesday, July 9, 2013
Bald Cypress forest at least 0.8 km long off the coast of Alabama, freshly preserved for at least 52,000 years under ocean sediment in an oxygen-free environment in the Gulf of Mexico and most likely uncovered by Hurricane Katrina in 2005.
Monday, July 8, 2013
powerful fast radio bursts (FRB) of unknown origin outside the Milky Way galaxy and billions of light-years away, each lasting only a few milliseconds yet giving off more energy than does our Sun in 300,000 years.