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Your search has returned 64 articles:
  • Science Stats

    Community protection against measles jeopardized

    In the first seven weeks of 2015, measles struck 141 people in 17 states and Washington, D.C. Most people in the United States are protected against the often severe fever and rash by having had one or more doses of the measles, mumps and rubella vaccine. But a small fraction of people either can’t get the shot — they are too young or have weak immune systems — or choose not to.

    The...

    02/25/2015 - 11:30 Health
  • Letters to the Editor

    Water's unclear origins, shaky solutions to climate change and more reader feedback

    Water’s origin story

    New evidence suggests that comets may not have delivered water to Earth. Water detected in comet 67P/Churyumov–Gerasimenko’s hazy atmosphere isn’t a chemical match for Earth’s oceans, as Ashley Yeager reported in “Ocean water may not be from comets” (SN: 1/10/15, p. 8).

    The Rosetta spacecraft searched for a heavy form of hydrogen known as deuterium around 67P...

    02/25/2015 - 10:30 Earth, Planetary Science
  • Editor's Note

    Why stress doesn't just stay in your head

    My favorite quote in Nathan Seppa’s story about chronic stress and health belongs to Rosalind Wright, a pulmonologist who studies links between psychological stress and diseases like asthma. Stress, she says, is “not just affecting your head.”

    Of course, the brain is where chronic stress starts. But its influences on the body roam far and wide, working insidiously through the...

    02/25/2015 - 10:30 Health, Mental Health
  • Feature

    For athletes, antioxidant pills may not help performance

    In the fickle world of sports nutrition fads, few trends have shown the staying power of antioxidants. For more than three decades, athletes have remained devoted fans of supplements; the American College of Sports Medicine estimates that around half of elite athletes take vitamins in hopes of keeping their bodies fit and boosting endurance.

    The idea makes intuitive sense: Energy...

    02/24/2015 - 12:00 Health, Physiology, Nutrition
  • Reviews & Previews

    ‘Ocean Worlds’ chronicles the story of water on Earth and across the cosmos

    Ocean Worlds: The Story of Seas on Earth and Other PlanetsJan Zalasiewicz and Mark WilliamsOxford Univ., $29.95

    The oceans of other worlds might look nothing like Earth’s tranquil blue seas. Under the right high-pressure conditions, the water could exist in a weird supercritical state that is neither liquid nor steam. And yet the key to understanding such alien landscapes may...

    02/24/2015 - 09:00 Oceans, Planetary Science