Monday, December 26, 2011
Spider Brains Overflow into Legs
Researchers have found the brains of smaller spider species are proportionally larger compared to total body volume, so much so that some can fill up to 80% of the body cavity including about 25% of their legs.
Sunday, December 25, 2011
Japan Quake Shifted Satellites
The TÅhoku earthquake that struck Japan last March was so strong as to alter Earth's gravitational field enough to change the orbit of the twin Gravity Recovery and Climate Experiment (GRACE) satellites, sensitive NASA instruments designed to map Earth's gravity field from 500 km above the surface.
Saturday, December 24, 2011
Unknown Carvings in Jerusalem
A set of newly discovered "V"-shaped carvings dating back at least 2800 years in the limestone floor of the City of David excavation site in eastern Jerusalem have experts stumped as to the use and purpose of the design.
Friday, December 23, 2011
Biggest Black Holes
Astronomers have identified astonishingly massive black holes (NGC 4889, NGC 3842) with diameters ten times the size of our solar system and masses equal to 21 billion and 9.7 billion Suns, respectively, providing additional insight into the formation of the largest and oldest galaxies in the universe.
Thursday, December 22, 2011
Voyager Hits Stagnation Region
NASA's Voyager 1 probe has entered a "stagnation region" at the edge of our solar system, a calm region at the border of the heliosphere where the charged solar wind has stopped and the magnetic field has increased in intensity in response to the interstellar medium.
Wednesday, December 21, 2011
First Habitable Planet Found
NASA's Kepler satellite has identified its first planet (Kepler-22b) existing within the so-called "habitable zone," an orbit around a star with conditions where liquid water could exist and therefore the possibility of life.
Tuesday, December 20, 2011
Crab Grows Its Own Food
The newly discovered yeti crab (Kiwa puravida) that lives in the deep sea off the shores of Costa Rica cultivates "gardens" of symbiotic bacteria in its bristled claws that it periodically harvests and eats as its primary food source.
Monday, December 19, 2011
Wasps Recognize Faces
Researchers have demonstrated that the golden paper wasp (Polistes fuscatus) can recognize individuals of its same species from their facial markings, an ability thought to be a product of their highly social lifestyle.
Sunday, December 18, 2011
Outsider's View of Galaxy
The twin Voyager space probes are now far enough away from our own solar system to detect the Lyman-alpha wavelength of light from the Milky Way's center for the first time, a trace indicator of star formation unable to be detected from Earth.
Saturday, December 17, 2011
Baby-Filled Dinosaur Nest
A "breathtaking" fossilized nest has been discovered in Mongolia containing 15 juvenile protoceratops estimated to be about one year old when they died, providing evidence for extended parental care among dinosaurs.
Friday, December 16, 2011
Turtle Eggs Communicate
Researchers have found that the eggs of the Australian river turtles (Emydura macquarii) all hatch at the same time, despite temperature differences between the top and bottom of the nest that should affect development and hatching times, suggesting possible chemical communication among the clutch.
Thursday, December 15, 2011
Invasive Ants Vanish
One of the world's most invasive species, colonies of the Argentine ant (Linepithema humile) are collapsing and disappearing from New Zealand without human intervention, with speculation that low genetic diversity has made then susceptible to widespread disease.
Wednesday, December 14, 2011
Bones from Inkjet Printer
Researchers have used standard inkjet printer technology to build a three-dimensional scaffolding material of calcium phosphate, zinc and silicon to be used in orthopedic procedures and dental work for real bones to grow and heal as it dissolves within the body.
Tuesday, December 13, 2011
Psychopath's Brains Are Different
Diffusion tensor (DFI) and functional magnetic resonance images (fMRI) of prisoner's brains reveal reduced connectivity between the prefrontal cortex and amygdala in persons diagnosed as psychopaths, possibly explaining their callous and impulsive antisocial behavior.
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