1. Environment

    Legionnaires’ disease bacteria lurk in tap water

    Found in nearly half of faucets, contamination could explain sporadic cases of disease.

  2. Oceans

    Unknowns linger for sea mining

    Scientists struggle to predict underwater digs’ effects on sea life.

  3. Environment

    How oil breaks fish hearts

    Hydrocarbons that spill into oceans stifle the beat of tuna cardiac cells.

  4. Animals

    Windows may kill up to 988 million birds a year in the United States

    Single-family homes and low-rise buildings do much more damage than skyscrapers.

  5. Agriculture

    Some bioenergy crops are greener than others

    In the Upper Midwest, switchgrass trumps maize at boosting ecological health.

  6. Chemistry

    Battery blueprint promises green energy storage

    A device that relies on organic molecules could cheaply bank power from renewable sources.

  7. Environment

    Protein fibers trap greenhouse gas

    The method could scrub exhaust from cars and power plants.

  8. Environment

    Stillbirth rates tied to lead in drinking water

    Fetal death rates rose in Washington, D.C., in parallel with two recent spikes in drinking water’s lead levels.

  9. Environment

    World’s worst polluted

    A new report by Green Cross Switzerland and the Blacksmith Institute lists places posing the greatest risk to human health.

  10. Ecosystems

    Online map tracks forest shifts from space

    By layering more than 650,000 satellite images onto a Google map, researchers have created a new tool to track forest cover.

  11. Animals

    Malformed frogs rarer than thought

    Frogs with skin cysts or shortened or missing legs make up only 2 percent of the amphibians collected during a 10-year study.

  12. Environment

    Polluted water interferes with drug that combats parasitic scourge

    Arsenic contamination fuels resistance to one treatment for leishmaniasis.