1. Earth

    As globe warms, atmosphere keeps its cool

    Scientists confirm a confusing discrepancy between temperatures at Earth's surface and in its atmosphere.

  2. Earth

    The Importance of Being Electric

    By coordinating measurements from telescopes, planes, balloons, and a battery of instruments, terrestrial and space scientists have now placed themselves on almost intimate terms with sprites—luminous shapes that fleetingly appear high above lightning storms.

  3. Earth

    Famed undersea vent may be lost

    When scientists last month tried to revisit an undersea hydrothermal vent first discovered nearly a quarter of a century ago, they found the site desolate, possibly paved by a fresh volcanic eruption.

  4. Earth

    Mangled microfossils may mark impact sites

    Scientists studying sediment cores drilled in eastern Virginia say they’ve possibly identified a new clue to the locations of ancient, hidden impact craters: Just look for broken or twisted microbial fossils.

  5. Earth

    Presto, Change-o!

    Compared with the snail's-pace processes that normally shape Earth's surface, the impacts of extraterrestrial objects change our planet's geology in a flash.

  6. Agriculture

    Moos, microbes, and methane

    A feed additive could reduce methane emissions from cows.

  7. 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.

  8. Earth

    Algae Turn Fish into a Lethal Lunch

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

  9. 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.

  10. Earth

    Wretched weather sealed explorer’s fate

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

  11. Earth

    Taking a mountain’s measure

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

  12. Earth

    Corals keep eruption record

    Dust from a giant eruption is lodged within Florida coral.