1. Environment

    Old thermometers pose new problems

    Though health groups advocate getting mercury thermometers out of the home, obtaining sound advice on how to dispose of the thermometers can be problematic.

  2. Earth

    Algae Turn Fish into a Lethal Lunch

    Scientists demonstrated that some marine mammals have died from eating fish tainted with a neurotoxic diatom.

  3. Earth

    Most oil enters sea from nonaccidents

    Nearly all of the oil entering the marine environment traces not to accidents but to natural seeps and human activities where releases are intentional.

  4. Earth

    Wretched weather sealed explorer’s fate

    Unusually low temperatures hindered Robert Falcon Scott's polar expedition in 1912.

  5. Earth

    Taking a mountain’s measure

    A survey of Mount Everest alters its official elevation to 29,035 feet.

  6. Earth

    Corals keep eruption record

    Dust from a giant eruption is lodged within Florida coral.

  7. Earth

    Mapping the Frozen Sky: Study looks at clouds from both sides now

    By combining simultaneous observations from satellites and ground-based instruments, scientists can generate a three-dimensional map of the size and distribution of ice particles in a cirrus cloud.

  8. Earth

    Smoggy Asian air enters United States

    High concentrations of ozone from Asia reach the United States.

  9. Earth

    The Air That’s Up There

    Researchers are exploring how trees affect the chemistry of the atmosphere.

  10. Earth

    Shelter from Space Storms: Energy rebounds from Earth

    NASA satellite observations show that Earth's outer atmosphere interacts dramatically with the solar wind and shields the planet from it.

  11. Earth

    Honey may pose hidden toxic risk

    Many honeys may contain potentially toxic traces of potent liver-damaging compounds produced naturally by a broad range of flowering plants.

  12. Earth

    September’s Science: Shutdown of airlines aided contrail studies

    The shutdown of commerical aviation within the United States for 3 days after Sept. 11, 2001, provided scientists with a unique opportunity to study the influence of high-flying jet aircraft on Earth's climate.