Earth

  1. Life

    Emerging disease may wipe out common bat in the Northeast

    Hard-hit region could lose little brown myotis to white-nose syndrome within decades

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  2. Chemistry

    Receipts a large — and largely ignored — source of BPA

    A host of small studies raises a big alarm about exposure to a hormone-mimicking chemical.

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  3. Tech

    Cashiers may face special risks from BPA

    “People working at places that use thermal paper can have continual contact with bisphenol A. And if they knew, I think they would be horrified,” notes Koni Grob, an analytical chemist with an official government food laboratory in Zurich, Switzerland. He’s describing the thermal paper commonly used throughout Europe and North America to print store receipts.

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  4. Climate

    EPA rejects climate-change deniers’ petitions

    A number of people challenge that climate change is real, that it's due to greenhouse gases released by human activities and that it's a threat to human health and the environment. On July 29, the Environmental Protection Agency formally rejected those claims as it turned down 10 petitions asking the Obama administration to reconsider EPA’s “endangerment finding.”

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  5. Earth

    Trailing dust devils

    Whirlwinds leave dark paths behind by sucking sand grains clean.

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  6. Chemistry

    More evidence that BPA laces store receipts

    People interested in limiting exposure to bisphenol A — a hormone-mimicking environmental contaminant — might want to consider wearing gloves the next time a store clerk hands over a cash-register receipt. A July 27 report by a public-interest research group has now confirmed many of these receipts have a BPA-rich powdery residue on their surface.

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  7. Earth

    Researchers create global map of tree height

    A new map shows forest height around the globe and will improve estimates of how much carbon is stored in trees.

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  8. Math

    Swarming locusts impossible to predict

    A mathematical analysis shows that random factors underlie the insects’ movements across the landscape.

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  9. Planetary Science

    Hole from on high

    Researchers discover a fresh meteorite impact crater using Google Earth.

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  10. Animals

    Fearless tadpoles give invaders the edge

    Clueless larvae don’t heed the scent of nonnative turtles, giving newcomers an edge over native species, a European study finds.

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  11. Agriculture

    Germs eyed to make foods safer

    Adding viruses to foods doesn’t sound appetizing, much less healthy. But it’s a stratagem being explored to knock some of the more virulent food poisoning bacteria out of the U.S. food supply. Scientists described data supporting the tactic July 18 at the Institute of Food Technologists’ annual meeting in Chicago.

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  12. Earth

    New ‘walking’ fishes discovered in Gulf oil-spill zone

    Pancake batfishes may be getting oiled before they get named.

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