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Your search has returned 799 articles:
  • News

    Epigenetic marks may help assess toxic exposure risk — someday

    Nearly everything people do, eat or come into contact with can change them in little ways — sometimes with big consequences. Exposure to some chemicals can damage DNA, leading to cancer and other problems. Other molecular changes—chemical tags added to DNA or to proteins called histones — may affect health without injuring DNA.

    There are more than 100 varieties of these chemical tags,...

    12/09/2016 - 06:00 Epigenetics, Toxicology
  • News

    Wanted: New ways to chill air conditioners, fridges

    The hunt is on for chemicals to keep both you and the planet cool.

    A new agreement will soon begin phasing out the powerful greenhouse gases currently used in air conditioners, refrigerators and insulating foams. These gases, called hydrofluorocarbons, or HFCs, can cause hundreds of times more global warming per molecule than carbon dioxide. The phaseout, announced by world leaders on...

    10/25/2016 - 09:00 Climate, Chemistry, Science & Society
  • Feature

    Reef rehab could help threatened corals make a comeback

    Coral reefs are bustling cities beneath tropical, sunlit waves. Thousands of colorful creatures click, dash and dart, as loud and fast-paced as citizens of any metropolis.

    Built up in tissue-thin layers over millennia, corals are the high-rise apartments of underwater Gotham. Calcium carbonate skeletons represent generations of tiny invertebrate animals, covered in a living layer of...

    10/18/2016 - 05:30 Oceans, Conservation
  • 50 Years Ago

    50 years ago, noise was a nuisance (it still is)

    Noise Menace Threatens Man — Noise, forever bombarding urban and suburban man, is becoming an increasing menace to his psychological and physical well-being. Little cars with oversized engines, enormous trucks, sirens, construction projects and jet planes are exacting high prices in frazzled nerves, fatigue and poor hearing. — Science News, October 15, 1966 


    Concerns about sounds...

    10/09/2016 - 08:00 Health, Pollution
  • Wild Things

    Pup kidnapping has a happy ending when a seal gets two moms

    On December 3, 2000, at Cape Shirreff, near the tip of the Antarctic Peninsula, a female Antarctic fur seal experienced a personal tragedy: She gave birth to a dead male pup. For the next day or so, the seal, numbered “12” by scientists watching her group, nuzzled her baby and vocalized to him.

    Nearby on December 4, another female, No. 29, gave birth to a live male pup. But soon she, too...

    07/29/2016 - 12:48 Animals, Oceans
  • Science Ticker

    40 years ago, Viking 1 pioneered U.S. exploration on Mars

    Happy 40th anniversary, Viking 1! Four decades ago — July 20, 1976 — the robotic probe became the first U.S. mission to land on Mars. Its sister spacecraft, Viking 2, touched down 45 days later.

    Launched August 20, 1975, Viking 1 spent over 6 years snapping pictures and studying the soil at its landing site, an ancient crater named Chryse Planitia. An experiment to look for Martian...

    07/20/2016 - 07:00 Planetary Science
  • Wild Things

    That ‘Dory’ for sale may have been poisoned with cyanide

    In the years after the animated movie Finding Nemo was released by Pixar in 2003, sales of clownfish spiked as fans, little and big, rushed to buy their own “Nemo.” So many Nemos were purchased that the sales actually depleted some wild stocks of the fish. Pressure on those wild populations has since dropped, thanks to efforts to increase captive clownfish breeding. But now there are worries...

    06/16/2016 - 15:00 Animals, Conservation
  • Wild Things

    Vultures are vulnerable to extinction

    Vultures are the birds everyone loves to hate. Even though you have nothing to fear from them — unless you’re dead — vultures’ steady diet of carrion will gross most people out. That diet may also be responsible for the birds’ quick and steep declines around the globe, a new study shows.

    It’s not the dead bodies that are killing vultures, though. It’s the poisons with which humans have...

    05/11/2016 - 08:36 Animals
  • Wild Things

    Snake fungal disease spreading in eastern United States

    There’s a deadly fungus spreading among snakes in the United States. But don’t cheer. As much as snakes might frighten us, they’re important players in the ecosystem, and we really don’t want to lose them.

    In 2006, scientists discovered some odd skin infections among snakes in declining populations in New Hampshire. Soon after, fungal infections were found in massasauga rattlesnakes in...

    03/15/2016 - 09:00 Animals
  • News in Brief

    ‘Cancer moonshot’ launch prep under way

    When President Barack Obama called for a “cancer moonshot” during his State of the Union address, the idea was big on vision and low on specifics. The goal, he said, was to make America “the country that cures cancer once and for all.” Now, details are trickling out, but a true plan for launch won’t be ready until June.

    In February, the White House released a list of cancer research...

    03/07/2016 - 16:34 Cancer