Mathematical Circles: Volume 2, Mathematical Circles Revisited, Mathematical Circles Squared: Mathematical Circles Revisited, Mathematical Circles Squared v. 2 (Mathematical Association of America)
Science Daily (Free subscription) | 25/11/2009
Peering through the thick dust clouds of our galaxy's "bulge" (the myriads of stars surrounding its center), astronomers have unveiled an unusual mix of stars in the stellar grouping known as Terzan 5. Never observed anywhere in the bulge before, this peculiar "cocktail" of stars suggests that Terzan 5 is in fact one of the bulge's primordial building blocks, most likely the relic...
Science Daily (Free subscription) | 25/11/2009
Photosynthetic organisms need to cope with a wide range of light intensities, which can change over timescales of seconds to minutes. Too much light can damage the photosynthetic machinery and cause cell death. Scientists have found that specific proteins in algae can act as a safety valve to dissipate excess absorbed light energy before it can wreak havoc in cells.
Science Daily (Free subscription) | 25/11/2009
Earth scientists have found strong evidence that the geological processes that lead to the formation of oceanic crust are not as uniformly passive as believed. They found centers of dynamic upwelling in the shallow mantle beneath spreading centers on the seafloor.
Science Daily (Free subscription) | 25/11/2009
Mammals have evolved a complex system for controlling bone remodeling. Babies require calcium for healthy bones and they obtain it from their mother's milk. Nursing mothers release calcium from their bones. Surprisingly, however, the same system also plays a key part in the control of fever and of female body temperature.
Science Daily (Free subscription) | 25/11/2009
It is well known that some animal species use camouflage to hide from predators. Individuals that are able to blend in to their surroundings and avoid being eaten are able to survive longer, reproduce, and thus increase their fitness (pass along their genes to the next generation) compared to those who stand out more. This may seem like a good strategy, and fairly common in the animal kingdom, but...
Science Daily (Free subscription) | 19/11/2009
Researchers have confirmed that Homo floresiensis is a genuine ancient human species and not a descendant of healthy humans dwarfed by disease. Using statistical analysis on skeletal remains of a well-preserved female specimen, researchers determined the "hobbit" to be a distinct species and not a genetically flawed version of modern humans.
Science Daily (Free subscription) | 19/11/2009
Rodent, reptile and ant lion species behave differently on either side of the Israel-Jordan border. Researchers found that Israeli gerbils are more cautious than their Jordanian friends, and the funnel-digging ant lion population in Israel is unmistakably larger than in Jordan.
Science Daily (Free subscription) | 19/11/2009
Like the paperless office, the smart home has been a long time coming, but a new article suggests that radio tags coupled with mobile communications devices could soon provide seamless multimedia services to the home.
Eurekalert (Free subscription) | 19/11/2009
( American Friends of Tel Aviv University ) Prof. Mira Ariel of Tel Aviv University has scientifically quanitifed the common interpretation of the word "most," finding it to be a measurement of 80 to 95 percent of a sample.
Science Daily (Free subscription) | 17/11/2009
More than six percent of expectant mothers in Quebec, Canada, consume prescription drugs that are known to be harmful to their fetuses, according to a new study. Half these women will voluntarily terminate their pregnancy fearing congenital malformations, which means the abortion rate among these women is 11 percent higher than in the rest of the population.
Science Daily (Free subscription) | 17/11/2009
During a single hospitalization, acute heart attack patients averaged a total ionizing radiation dose equal to 725 chest X-rays. Researchers need to better determine which and when ionizing radiation tests are best used in heart attack patients.
Science Daily (Free subscription) | 17/11/2009
Using ESO's Very Large Telescope and its ability to obtain images as sharp as if taken from space, astronomers have made the first time-lapse movie of a rather unusual shell ejected by a "vampire star." This enabled astronomers to determine the distance and intrinsic brightness of the outbursting object. It appears that this double star system is a prime candidate to be one of the long-sought...
Science Daily (Free subscription) | 17/11/2009
A new type of immune cell that can be out of control in certain chronic inflammatory diseases, worsening the symptoms of conditions like psoriasis and asthma, is described for the first time in new research.
Eurekalert (Free subscription) | 17/11/2009
( American Institute of Mathematics ) The American Institute of Mathematics (AIM) announces a new online tool for creating and maintaining lists of unsolved mathematics problems. This tool has the potential to change mathematics research by bringing a wider range of people and expertise in contact with research questions. The tool is being released on the same day as a worldwide celebration of the...
Eurekalert (Free subscription) | 17/11/2009
( Georgia Institute of Technology Research News ) Research recently funded by the American Recovery and Reinvestment Act of 2009 aims to develop computational tools that will utilize next-generation petascale computers to understand genomic evolution.
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