Wednesday, February 29, 2012
Tuesday, February 28, 2012
newly discovered class of planet, one larger than Earth but with its mass consisting of more water than solid rock and an internal structure extraordinarily different than what is known.
Monday, February 27, 2012
crust stretching and breaking along these faults, with this activity considered still active as it is estimated to have occurred less than 50 million years ago.
Sunday, February 26, 2012
robust ecosystem of bacteria, archaea, DNA and other molecules of life only two meters beneath the surface of the Atacama Desert in Chile, the driest place on Earth and a good analogue for most of the terrain of Mars.
Saturday, February 25, 2012
bizarre communicable cancer threatening the Tasmanian devil populations can be traced back to a single "immortal" female who lived about 16 years ago and who lives on through the infection, revealing possible leads for a potential vaccine.
Friday, February 24, 2012
Thursday, February 23, 2012
too dense to rise to the surface.
Wednesday, February 22, 2012
chemical signature" to their nest-mates as a collective memory for defense of the colony.
Tuesday, February 21, 2012
Monday, February 20, 2012
accents" to their vocalizations when divided into separate similar social groups, a subtle and innate quality once thought too primitive to be expressed in all but a few mammals and songbirds.
Sunday, February 19, 2012
miniature reptiles living only in a few square miles on Madagascar, including the smallest leaf chameleon known (Brookesia micra) that grows no more than an inch long.
Saturday, February 18, 2012
rotating 6.5 minutes slower than it was 16 years ago when it was measured by NASA's Magellan mission, with planetary scientists unable to explain the cause of this difference.
Friday, February 17, 2012
volcanic ponds of water instead of the popular theory of life arising from deep ocean thermal vents, citing the high ratios of potassium to sodium found in both cellular fluid and volcanic mud pots.
Thursday, February 16, 2012
left by Neanderthals, previously believed to be too primitive for representational art.
Wednesday, February 15, 2012
enhances thrust for the animal's motion.
Tuesday, February 14, 2012
least attractive hide pattern for horseflies (tabanids), who are otherwise attracted to horizontally polarized light to identify aquatic environments, suggesting the zebra stripes evolved as a defense against these insects.
Monday, February 13, 2012
porto potty" flower after its strong stench of rotting meat and feces used to attract insects.
Sunday, February 12, 2012
underwater noise stresses whale populations.
Saturday, February 11, 2012
purely ultrasonic calls, vocalizing at 70 kHz to 90 kHz and well beyond the range of human hearing.
Friday, February 10, 2012
entire genome of a previously unknown extinct line of humans, a group closely related to Neanderthals called Denisovians, from a small fragment of a finger bone found in the Denisovia Cave in southern Siberia.
Thursday, February 9, 2012
reproduce the song of this extinct species after 160 million years.
Wednesday, February 8, 2012
possible origin point for the descendants of the original North American settlers.
Tuesday, February 7, 2012
Monday, February 6, 2012
predicting an eruption decades before the actual event.
Sunday, February 5, 2012
bat fly trapped in amber for 20 to 30 million years has revealed several key facts, including the specific co-evolution of bats and bat flies and the prevalence of malaria in the New World for millions of years.
Saturday, February 4, 2012
outside our own solar system to be very different than the space within the heliosphere, with more free oxygen atoms found inside our solar system than in the immediate interstellar space.
Friday, February 3, 2012
Thursday, February 2, 2012
thermosphere to swell and increase the drag on objects in orbit.
Wednesday, February 1, 2012
Little Ice Age," a period of extended cooling due to decreased solar radiation that lasted from about 1300 A.D. into the nineteenth century.