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Study: Male bass in many U.S. rivers feminized Government scientists figure that one out of five male black bass in American river basins have egg cells growing inside their sexual organs, a sign of how widespread fish feminizing has become. MsnBarcoding endangered sea turtles Conservation geneticists who study sea turtles have a new tool to help track this highly migratory and endangered group of marine animals: DNA barcodes. DNA barcodes are short genetic sequences that efficiently distinguish species from each other-even if the samples from which the DNA is extracted are minute or degraded. Now, a recently published research paper by scientists from the American Museum of Natural History and the University of Canberra, among other organizations, demonstrates that this technology can be applied to all seven sea turtle species and can provide insight into the genetic structure of a widely-dispersed and ancient group of animals. Biologynews.comToday on New Scientist: 14 September 2009 Today's stories on newscientist.com, at a glance - including the next generation of space rovers, the man who fed the world, and Antarctica's hidden plumbing system NewScientist.comOn This Day in Science History - September 16 - Fahrenheit September 16th marks the passing of Gabriel Fahrenheit. Fahrenheit was a German physicist who invented the alcohol and mercury thermometers. He is also the person responsible for the Fahrenheit temperature scale. The Fahrenheit scale was originally calibrated to three points. The first point was set at 0 °F and measured from the lowest temperature of a mixture of water, ice and ammonium chloride at equilibrium. The second point was measured when still water would start to form ice on its surface and assigned the value of 32 °F. The third point was set to 96 °F and is recorded by measuring the temperature of a person when the thermometer is held under the armpit or under the tongue. He designated the interval of a degree Fahrenheit to correspond to 64 degrees between the second and third point. This made marking his thermometer easy since he could bisect the interval between the two values six times. Scientists later observed that water would boil at nearly 180 degrees a AboutFamous Scientists - Scientist Biographies and Portraits I wanted to draw your attention to a little project that has become a rather large project. Back in January of 2009, Todd started adding a daily blog post entitled 'This Day in Science History.' Each blog post is accompanied by an index of events that occurred on that date. He spends a lot of time sorting fact from fiction and researching discrepancies in dates. In doing so, he learns a lot about the scientists. He has been gathering photos and portraits of the scientists and has been writing up brief biographies. To date, there are over 200 scientist biographies in the index.Since this is the chemistry site, his principal goal is to publicize information about famous chemists and other scientists who have made contributions to chemistry and chemical engineering. If you are or know someone who has made a contribution to chemistry and you're not on the list yet, just shoot me an e-mail with the details and we will get you added. Please be sure to provide sufficient reference material so AboutNatural History Museum`s Darwin Centre opens Natural History Museum's £78m cocoon will allow the public to watch - and quiz - scientists in actionMillions of plant and animal specimens will go on display in giant eight-storey cocoon tomorrow as the Natural History Museum's new £78m Darwin Centre opens its doors to the public.Up to 2,500 people a day will also be able to see the museum's scientists in action, working in once-concealed hi-tech laboratories and among 3.3 kilometres of cabinets.Some of the glass-fronted laboratories will be linked by intercom so visitors can quiz the experts about what they are doing.The opening celebrations were attended Prince William and Sir David Attenborough. 'The Natural History Museum and the dedicated people who work here are at the very forefront of research, seeking out through study of the natural world the answers to the great questions of our age,' the prince said.'Its collections, and what it achieves in the areas of research and education make it - quite simply - the envy of the world. GuardianDarwin Centre `cocoon` opens Natural History Museum's £78m cocoon will allow the public to watch - and quiz - scientists in actionMillions of plant and animal specimens will go on display in giant eight-storey cocoon tomorrow as the Natural History Museum's new £78m Darwin Centre opens its doors to the public.Up to 2,500 people a day will also be able to see the museum's scientists in action, working in once-concealed hi-tech laboratories and among 3.3 kilometres of cabinets.Some of the glass-fronted laboratories will be linked by intercom so visitors can quiz the experts about what they are doing.The opening celebrations were attended Prince William and Sir David Attenborough. 'The Natural History Museum and the dedicated people who work here are at the very forefront of research, seeking out through study of the natural world the answers to the great questions of our age,' the prince said.'Its collections, and what it achieves in the areas of research and education make it - quite simply - the envy of the world. GuardianBorlaug, who saved millions from hunger, dies Scientist and Nobel Peace Prize winner Norman Borlaug rose from his childhood on an Iowa farm to develop a type of wheat that helped feed the world, fostering a movement that is credited with saving up to 1 billion people from starvation. USATODAYTails Win: Gecko tails dance to avoid predators, and could help scientists understand how to treat spinal cord injuries Lizards are well known for snapping off their tails when a predator snags them from behind, but that defense strategy doesn’t mean it's game over for the disembodied tail. The abandoned appendage has a network of neurons that guides it to flail about even after losing its connection to the brain. [More] Scientific AmericanHow stem cells make skin [NEWS] Stem cells have a unique ability: when they divide, they can either give rise to more stem cells, or to a variety of specialised cell types. In both mice and humans, a layer of cells at the base of the skin contains stem cells that can develop into the specialised cells in the layers above. Scientists at the European Molecular Biology Laboratory (EMBL) in Monterotondo, in collaboration with colleagues at the Centro de Investigaciones Energéticas, Medioambientales y Tecnologicas (CIEMAT) in Madrid, h… LifeSciencesWorld.com1 2 3 |
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