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      January 18, 2012Health

      How Exercise Might Help Our Cells Help Us

      In addition to helping us get fit, exercise seems to play a disproportionate role in fending off chronic diseases, such as diabetes. A new study suggests how activity on the cellular level might be keeping us healthy when we get activity on the macro level.The process in question is autophagy, a series of actions in which cells recycle internal bits and that, in turn, helps to keep cells agile and able to adjust to changes in energy requirements and nutritional conditions...
      January 19, 2012Health

      Sex Is Safe for Many with Heart Disease, Report Says

      Sex might seem like a risky occupation for the more than 27 million Americans who have been diagnosed with heart disease. But that's not necessarily so, says a new report.
      November 22, 2010Health

      Second human embryonic stem cell trial cleared by FDA

      An embryonic stem cell treatment for a rare inherited form of blindness was approved Monday for clinical trials. This is only the second human embryonic stem cell-based trial to be approved by the U.S...
      November 21, 2011Health

      Will CT Scans and MRIs Kill the Autopsy?

      Instead of cutting into a dead body to determine the cause of death, some coroners are already calling in a radiologist. But can CT (computed tomography) and MRI (magnetic-resonance imaging) tests accurately assess the recently deceased?Formal autopsies have been on the decline for decades, due in part to tightening budgets...
      November 10, 2011Evolution

      Camouflage-Changing Octopuses in the Deep, Dim Seas

      Vivid videos have captured stunning shallow-water octopuses performing impressive feats of disguise—changing color and texture to match kelp, coral or the sandy bottom.
      July 11, 2012Evolution

      Major Phobias Might Hasten Aging

      Do you get panicky in wide-open spaces? Tight, closed ones? What about in high places or—eek!—around arachnids? If these fears are frequent or debilitating, you might have a phobic anxiety...
      July 25, 2012Evolution

      First Prehistoric Snake Slithered Out on Land-Not at Sea

      Sorry, sea serpents. Snakes, it seems, slithered off their lizard legs on land. A new analysis of a primitive snake fossil suggests that these animals emerged from a line of burrowing reptiles.Snakes are in the same reptilian order that includes lizards, but just how and where they split off to live their legless lives has been a bit of a mystery...
      March 31, 2014Biology

      Scientists Move to Patent Octopus Robot

      Scientists have spent years crafting a very special, creepy robot. One that can crawl over obstacles, swim through surf and grasp just about any object.
      July 6, 2009Computing

      Your own personal codex: Oldest bible digitized for free access

      Scattered across continents, the 1,600-year-old Codex Sinaiticus bible has been fully reunited in a digital version online today. Users can navigate through the text via chapter and verse, see a digital scan of each page, and read English, German, Greek and Russian versions...
      June 24, 2009Evolution

      Stone Age jams: Humans playing the flute for at least 35,000 years, no word yet on sax

      Carved flutes dating back some 35,000 years were discovered during a dig last summer at an upper Paleolithic site in southwestern Germany, making them among—if not the—oldest documented musical instruments, reports a study published today in Nature ( Scientific American is part of the Nature Publishing Group)...
      July 13, 2013Evolution

      Octopuses Survive Sub-Zero Temps Thanks to Specialized Blue Blood

      Octopuses' oddities run deep—right down to their blue-hued blood. And new research shows how genetic alterations in this odd-colored blood have helped the octopus colonize the world's wide oceans—from the deep, freezing Antarctic to the warm equatorial tropics.The iron-based protein (hemoglobin) that carries oxygen in the blood for us red-blooded vertebrates becomes ineffective when faced with low-oxygen levels...
      July 25, 2010Health

      Subatomic sunscreen: How light particles can repair UV-damaged DNA

      The life-giving sun can be quite rough on genetic material. Most organisms, including plants and many animals, are equipped with a special enzyme in their cells that is quick to repair DNA damage wrought by the sun's ultraviolet (UV) rays...
      September 17, 2009Environment

      Lack of insurance causes more than 44,000 U.S. deaths annually, study says

      Going without health insurance can delay when people obtain primary and preventative care, potentially resulting in poorer health. Even more gravely, a lack of private health insurance brings an increased risk of death; uninsurance is to blame for some 44,789 adult deaths across the U.S...
      September 28, 2009The Sciences

      Could a microchip help to diagnose cancer in minutes?

      Current cancer screening often requires painful procedures and weeks of waiting to obtain results. But what if doctors could read a biological sample with a small hand-held device and come back with an answer in less than an hour?...
      November 1, 2010Biology

      Could a dose of arthritis medication prevent postsurgical memory loss?

      Like people, mice sometimes show signs of general confusion and memory loss after surgery. Common major (noncardiac) procedures, such as orthopedic operations, can lead to postsurgical cognitive decline in some seven to 26 percent of patients...
      April 24, 2009The Sciences

      Have scientists discovered Spider-Man's secret to superstrong silk?

      Spider silk alone is stronger than steel, but researchers in Halle Germany have found that it can be made even stronger. A new paper, published today in Science reports that spider silk can be infused with metals such as aluminum, zinc and titanium...
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