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Giant crystals and spherical flames: science in microgravity The International Space Station may still be under construction, but microgravity research has been underway for decades. We round up some of the coolest experiments so far NewScientist.comLarge-scale study probes how cells fight pathogens [NEWS] Researchers reconstruct a key molecular circuit in mammalian immune cells; genome-scale methods offer a practical model for future studies Scientists have deciphered a key molecular circuit that enables the body to distinguish viruses from bacteria and other microbes, providing a deep view of how immune cells in mammals fend off different pathogens. The new research, which appears in the September 3 advance online edition of the journal Science, signifies one of the f… LifeSciencesWorld.com2 new antibodies found to cripple HIV Researchers at and associated with the International AIDS Vaccine Initiative (IAVI), at The Scripps Research Institute, and at the biotechnology companies Theraclone Sciences and Monogram Biosciences have discovered two powerful new antibodies to HIV that reveal what may be an Achilles heel on the virus. They published their work in Science this week. Biologynews.netArctic summers hottest for 2,000 years The Arctic has warmed as a result of climate change, despite the Earth being farther from the sun during summer monthsWarming as a result of increased levels of greenhouse gases in the atmosphere has overwhelmed a millennia-long cycle of natural cooling in the Arctic, raising temperatures in the region to their highest for at least 2,000 years, according to a report.The Arctic began to cool several thousand years ago as changes in the planet's orbit increased the distance between the sun and the Earth and reduced the amount of sunlight reaching high northern latitudes during the summer.But despite the Earth being farther from the sun during the northern hemisphere's summer solstice, the Arctic summer is now 1.2C warmer than it was in 1900.Writing in the US journal Science, an international team of researchers describe how thousands of years of natural cooling in the Arctic were followed by a rise in temperatures from 1900 which accelerated briskly after 1950.The warming of the Arctic i GuardianArctic summers are hottest for 2,000 years The Arctic has warmed as a result of climate change, despite the Earth being farther from the sun during summer monthsWarming as a result of increased levels of greenhouse gases in the atmosphere has overwhelmed a millennia-long cycle of natural cooling in the Arctic, raising temperatures in the region to their highest for at least 2,000 years, according to a report.The Arctic began to cool several thousand years ago as changes in the planet's orbit increased the distance between the sun and the Earth and reduced the amount of sunlight reaching high northern latitudes during the summer.But despite the Earth being farther from the sun during the northern hemisphere's summer solstice, the Arctic summer is now 1.2C warmer than it was in 1900.Writing in the US journal Science, an international team of researchers describe how thousands of years of natural cooling in the Arctic were followed by a rise in temperatures from 1900 which accelerated briskly after 1950.The warming of the Arctic i GuardianMagnetic monopoles detected in a real magnet for the first time Researchers from the Helmholtz Centre Berlin, in cooperation with colleagues from Dresden, St. Andrews, La Plata and Oxford, have for the first time observed magnetic monopoles and how they emerge in a real material. They publish this result in the journal Science within the Science Express web site on Sept. 3. Physorg.comTransition from Hunting to Farming in Europe: A Photo Essay According to a new genetic study reported in Science Express tomorrow, the first farmers of Europe were almost certainly immigrants, perhaps descendants of those first farmers in the Fertile Crescent. The article is a continuation of the study of the archaeological Linearbandkeramik culture, and I've used it as the basis for a new photo essay on the transition from hunting to farming in Europe. Geographic Range of Linearbandkeramic - the First Central European Farmers. Image © Science The archaeological culture known as Linearbandkeramik (or LBK for short) has been long recognized as that of the originators of agriculture in Europe. LBK is marked by a distinctive pottery, house style and stone tool technology, but most importantly, the people carried a farming technology not seen in Europe before that point. Agriculture?the domestication of wheat, barley, peas, lentils and linseed; and cattle, sheep, goats and pigs?was an invention of the Near East and Southwestern Asia about 10,0 AboutAtoms don`t dance the `Bose Nova` (PhysOrg.com) -- Hanns-Christoph Naegerl's research group at the Institute for Experimental Physics, Austria, has investigated how ultracold quantum gases behave in lower spatial dimensions. They successfully realized an exotic state, where, due to the laws of quantum mechanics, atoms align along a one-dimensional structure. A stable many-body phase with new quantum mechanical states is thereby produced even though the atoms are usually strongly attracted which would cause the system to collapse. The scientists report on their findings in the leading scientific journal Science. Physorg.comCommon good is best achieved through rewards, not punishment To promote the common good, should helpers be rewarded, or should free riders be punished? Although the bulk of previous research has fingered punishment as the best enforcer, a new study published online today in Science found that rewards are more effective . [More] Scientific AmericanOpen Source DNA: Mathematical Formula Protects Genetic Privacy In the chilling science fiction movie Gattaca, Ethan Hawke stars as a man with 'inferior genes' who assumes another's genetic identity to escape a dead-end future. The 1997 film illustrates the very real fear swirling around today's genome research ? fear that private genetic information could be used negatively against us. Last year, after a published paper found serious security holes in the way DNA data is made publicly available, health institutes in the United States and across the world removed all genetic data from public access. Bioethics.net1 2 3 4 |
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