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Tempe - Apr 01, 2004New finds from an open-air archaeological site in the Serengeti National Park in Tanzania have intriguing implications for the evolution of modern human behavior, including further indications that symbolic thinking developed in humans earlier than the currently accepted date of about 35,000 years ago. Molecular Midwives Hold Clues To The Origin Of Life 
Atlanta - Apr 01, 2004Adding a small molecule, dubbed a "molecular midwife," researchers increased the rate of DNA formation in a chemical reaction 1,000 fold over a similar reaction lacking a midwife. |
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Study Clarifies Evolutionary History Of Early Complex Single-Celled Life
Tysons Corner VA - Mar 27, 2004A billion years ago (the Neoproterozoic age), complex single-celled organisms, the acritarchs, began to develop, grow, and thrive. Almost a billion years later, the study of the evolutionary history of acritarchs began to bog down amid inconsistencies in the reporting of the diversity of species. What Really Makes Us Tick 
Houston - Mar 29, 2004From sleep patterns to health conditions, biological clocks get down to what makes us tick. The University of Houston is home to one of the world's leading centers for biological rhythms research. With five laboratories and a team of more than 30 scholars led by five tenured faculty members, the UH Biological Clocks Program studies an array of issues with far-reaching human implications. Protein Folding On A Chip 
Montreal - Mar 29, 2004Scientists at the U.S. Department of Energy's Brookhaven National Laboratory are proposing to use a supercomputer originally developed to simulate elementary particles in high-energy physics to help determine the structures and functions of proteins, including, for example, the 30,000 or so proteins encoded by the human genome. A Picture Is Worth A Thousand Miles 
Blacksburg - Mar 29, 2004The body size of ancient creatures, bivalves and brachiopods, could tell geoscientists a lot about the creatures' life history and about the ecology of the times in which they lived. However, traveling the world to measure these creatures' fossils would take several life-times and more travel funds than scientists usually have. NIST-led Research De-Mystifies Origins Of 'Junk' DNA 
Washington - Mar 26, 2004A debate over the origins of what is sometimes called "junk" DNA has been settled by research involving scientists at the Center for Advanced Research in Biotechnology (CARB) and a collaborator, who developed rigorous proof that these mysterious sections were added to DNA "late" in the evolution of life on earth--after the formation of modern-sized genes, which contain instructions for making proteins. Wading In: Studying Earth's Oceans 
Pasadena CA - Mar 24, 2004When a friend asked Jorge Vazquez to speak eight years ago to a group of high school students about his job and Earth science, the JPL oceanographer reluctantly said yes. "I didn't think I'd like it," he says. Vazquez was right. He didn't like it: he loved it. Word got out, and before he knew it, he was getting calls from high school and junior high school teachers throughout the area. "I think they have some kind of network," he jokes. Artificial Prions Created 
San Francisco - Mar 23, 2004The culprit behind mad cow disease, a.k.a. bovine spongiform encephalopathy, is the most infamous mammalian form of prions. Prions are misfolded proteins that are capable of growing, replicating, and being passed on to daughter cells - that is, they are by themselves heritable. |
Spaceguard Redux, Put to Test
Moffett Field - Mar 22, 2004A small near-Earth asteroid (NEA), discovered Monday night by the NASA-funded LINEAR asteroid survey, made the closest approach to Earth ever recorded. There was no danger of a collision with the Earth during this encounter. Largely as a result of a Congressional mandate, NASA established a "Spaceguard" program with a goal of finding 90 percent of all the near-Earth asteroids (NEAs) larger than 1 kilometer in diameter by the end of 2008. Surviving With and Without Oxygen 
Moffett Field - Mar 22, 2004Christopher Chyba is the principal investigator for The SETI Institute lead team of the NASA Astrobiology Institute. Chyba formerly headed the SETI Institute's Center for the Study of Life in the Universe. His NAI team is pursuing a wide range of research activities, looking at both life's beginnings on Earth and the possibility of life on other worlds. Patagonian Ice Dam Studied From Space Cracks Open 
Paris - Mar 22, 2004A spectacle unseen for 16 years occurred in Patagonia this week: a natural dam of blue ice gave way to crushing lake waters trapped behind it, finally breaking apart. Rock Ahoy Near 'GEO' by Steven Chesley and Paul Chodas NASA's Near Earth Object Program Office
Pasadena - Mar 18, 2004A small near-Earth asteroid (NEA), discovered Monday night by the NASA-funded LINEAR asteroid survey, will make the closest approach to Earth ever recorded. There is no danger of a collision with the Earth during this encounter. Teeth tell the tale: Brits repelled Saxons 
London (UPI) March 17, 2004British scientists have proof Anglo-Saxons did not -- as most history books claim -- overrun native Britons 1,500 years ago. DNA Tests Refutes Neanderthal Ancestry Theory For Modern Humans 
Leipzig (UPI) March 16, 2004DNA analysis by researchers across Europe have yielded the best evidence yet Neanderthals made no significant genetic contributions to modern humans. Oceanic Acidity Influenced Early Carbon Dioxide Estimates
University Park - Mar 17, 2004An international team of geoscientists believes that carbon dioxide, and not changes in cosmic ray intensity, was the factor controlling ancient global temperatures. The new findings resulted from the researchers inclusion of the ocean's changing acidity in their calculations. |
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