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Researchers find 6,000-year-old fossil evidence
02-15-2007 · EurekAlert!Researchers, including a paleoethnobotanist at the University of Missouri-Columbia, recently found fossil evidence in seven archaeological sites ranging from the Bahamas to present-day Peru that showed people were eating domesticated chili peppers as long as 6,000 years ago. This makes chili peppers one of the oldest domesticated food sources in the Americas. The study will be published in the Feb. 15 edition of the journal Science.
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- 1,000-year-old Arctic ponds disappearing due to global warming
07-02-2007 · EurekAlert!
Research has uncovered alarming evidence that high Arctic ponds, many have been permanent bodies of water for thousands of years, are completely drying out during the polar summer. These shallow ponds are important indicators of environment change and are especially susceptible to the effects of climate change because of their low water volume.Researchers studied these Arctic ponds over 24 years. This data represents the longest record of systematic limnological monitoring from the high Arctic.
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- Most ancient case of tuberculosis found in 500,000-year-old human; points to modern health issues
12-07-2007 · EurekAlert!
Although most scientists believe tuberculosis emerged only several thousand years ago, new research from the University of Texas at Austin reveals the most ancient evidence of the disease has been found in a 500,000-year-old human fossil from Turkey.The discovery of the new specimen of the human species, Homo erectus, suggests support for the theory that dark-skinned people who migrate northward from low, tropical latitudes produce less vitamin D, which can adversely affect the immune system as well as the skeleton.
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- Stanford researchers say living corals thousands of years old hold clues to past climate changes
02-14-2008 · EurekAlert!
Stanford researcher Brendan Roark to talk at AAAS meeting about discovery that deep-water corals off Hawaii are as old as 4,000 years. Coral may hold clues to ocean and climate changes of past centuries, and must be protected from devastation from fishing ships and coral harvesters.
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- Hunting martian fossils best bet for locating Mars life, says ASU researcher
02-16-2007 · EurekAlert!
Hunting for traces of life on Mars calls for two radically different strategies, says Arizona State University professor Jack Farmer. Of the two, he says, with today's exploration technology we can most easily look for evidence for past life, preserved as fossil "biosignatures" in old rocks.Farmer is reporting on his work today (February 16) at the annual meeting of the American Association for the Advancement of Science in San Francisco.
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- Researchers uncover new piece to the puzzle of human height
01-13-2008 · EurekAlert!
In studies involving more than 35,000 people and a survey across the entire human genome, an international team supported in part by the National Institutes of Health has found evidence that common genetic variants recently linked to osteoarthritis may also play a minor role in human height. The findings were released today in the advance online publication of the journal Nature Genetics.
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- 480 million-year-old fossil sheds light on 150-year-old paleontological mystery
01-09-2008 · EurekAlert!
Discovery of an exceptional fossil specimen in southeastern Morocco that preserves evidence of the animal's soft tissues has solved a paleontological puzzle about the origins of an extinct group of bizarre slug-like animals with rows of mineralized armor plates on their backs, according to a paper in Nature.
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- How long is a child a child?
03-13-2007 · EurekAlert!
An international research team led by scientists from the Max Planck Institute for Evolutionary Anthropology (Leipzig, Germany) and the European Synchrotron Radiation Facility (Grenoble, France) has found evidence that some of the earliest members of our species had evolved our characteristically long developmental period, and most likely our extended childhood, over 160,000 years ago. These findings are in contrast to studies that suggest that early fossil hominins possessed short growth periods, which were more similar to chimpanzees than to living humans.
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- 480-million-year-old fossil sheds light on 150-year-old paleontological mystery
01-09-2008 · EurekAlert!
Discovery of an exceptional fossil specimen in southeastern Morocco that preserves evidence of the animal's soft tissues has solved a paleontological puzzle about the origins of an extinct group of bizarre slug-like animals with rows of mineralized armor plates on their backs, according to a paper in Nature.
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- Ancient leaves point to climate change effect on insects
02-11-2008 · EurekAlert!
Insects will feast and leafy plants will suffer if temperatures warm and atmospheric carbon dioxide increases, according to a team of researchers who studied evidence of insect feeding on fossil leaves from before, during and after the Paleocene-Eocene Thermal Maximum.
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- More human-Neandertal mixing evidence uncovered
11-02-2006 · EurekAlert!
A reexamination of ancient human bones from Romania reveals more evidence that humans and Neandertals interbred. Erik Trinkaus, Ph.D., Washington University Mary Tileston Hemenway Professor in Arts & Sciences, and colleagues radiocarbon-dated and analyzed the shapes of human bones from Romania's Petera Muierii (Cave of the Old Woman). The fossils, discovered in 1952, add to the small number of early modern human remains from Europe known to be more than 28,000 years old.
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