Monday, December 28, 2009
Sunday, December 27, 2009
The African acacia plant has been found to secrete chemical signals that send the ants living on them into a defensive frenzy when under stress, revealing a rather complex symbiotic relationship between plant and insect.
Friday, December 25, 2009
Scientists have created the first transistor made from a single benzene molecule connected to two gold contacts, manipulating the molecule's energy states depending on the applied voltage to behave just like a silicon transistor.
Thursday, December 24, 2009
The European Space Agency's Gravity Field and Steady-State Ocean Circulation Explorer (GOCE) satellite has produced the most detailed map ever of variations in gravitational strength on the Earth's surface, measuring differences as small as one part in 10 trillion.
Tuesday, December 22, 2009
Paleontologists have discovered the fossilized remains of a venomous raptor (Sinornithosaurus) in China, a close relative to the ferocious Velociraptor, that lived 128 million years ago and is the first example of venom in the raptor lineage that leads to modern birds.
Sunday, December 20, 2009
The discovery of fog (mostly methane and ethane) on Saturn's largest moon, Titan, reveals that moon may be the only other body in our solar system to have significant quantities of liquid on its surface, thus the only known active hydrological cycle outside of Earth.
Thursday, December 17, 2009
A team of physicists has constructed a stable model of Borromean rings using three lithium atoms bound together, providing experimental proof to the solution of the three-body problem proposed mathematically in 1970.
Wednesday, December 16, 2009
Astronomers have discovered a new rocky planet (GJ 1214b, dubbed "super Earth") that is only 2.7 times the mass of the Earth and likely to consist of at least half water by mass, albeit at temperatures and pressures to extreme to support life as we know it.
Tuesday, December 15, 2009
Scientists have discovered a veined octopus (Amphioctopus marginatus) in Indonesia that carries and prepares coconut shells for shelter, possibly the first evidence of the use of tools by an invertebrate species.
Thursday, December 10, 2009
The latest images of Saturn sent back by the orbiting probe Cassini show the most detailed photos of a long-lived mysterious hexagon pattern in the jet stream surrounding Saturn's north pole, the origin of which remains unexplained.
Wednesday, December 9, 2009
Data from the Cassini spacecraft orbiting Saturn has solved a centuries-old mystery of why the moon Iapetus has a two-toned surface: It is created by dust settling on the leading side of Iapetus from another of Saturn's moon.
Monday, December 7, 2009
Sunday, December 6, 2009
A recent study has shown that the Sumatran volcano Toba, which erupted about 73,000 years ago, released about 800 cubic kilometers of ash into the air that blanketed the planet for about six years, dropping temperatures about 16°C and triggered an Ice Age that lasted 1800 years.
Saturday, December 5, 2009
Friday, December 4, 2009
In a study of the migratory European bird species blackcap (Sylvia atricapilla), researchers have discovered that the human act of feeding birds during the winter has changed the blackcap species into two reproductively isolated groups on their way to a separation of species in as little as 30 generations.
Wednesday, December 2, 2009
Tuesday, December 1, 2009
NASA's Fermi Gamma-Ray Space Telescope has directly detected high-energy gamma rays from Cygnus X-3, a mysterious binary system and one of the strongest x-ray sources that is believed to be a micro-quasar possibly powered by an accompanying black hole.