1. Earth

    All Cracked Up from the Heat? Major hunk of an Antarctic ice shelf shatters and drifts away

    A Rhode Island-size section of an Antarctic ice shelf splintered into thousands of icebergs in a mere 5-week period during the area's warmest summer on record.

  2. Earth

    Rocks in Earth’s mantle could hold five oceans

    Analysis of minerals created in the laboratory under conditions that simulate those deep within the planet suggests that the zone of rocks just outside Earth's core could hold enough water to fill the oceans five times.

  3. Earth

    Zooplankton diet of mercury varies

    By modeling a lake ecosystem in large tubs of water, researchers have found that zooplankton—an important link in the food chain—consume much less toxic methylmercury when the lake experiences an algal bloom.

  4. Earth

    A Confluence of Contaminants: Streams’ organic mix may pose environmental risk

    The combined effects of at least some of several dozen organic contaminants newly identified in U.S. streams may pose risks to aquatic organisms.

  5. Earth

    Water for the Rock

    A long-popular theory about how Earth got wet—that the oceans are puddles left by an ancient rain of comets—doesn't seem to hold water, and new hypotheses suggest that the celestial pantry is now empty of a key ingredient in the recipe for Earth.

  6. Earth

    Underground Soil Economy: Microbes hidden in the dirt react to UV boost

    The community of soil microbes may live hidden in the ground, but it still changes when there's more ultraviolet radiation above.

  7. Earth

    When the Mercury Falls: Autumn leaves taint river with poison

    Fall foliage that collects in stagnant waterways could release significant doses of a highly toxic form of mercury, which has the potential to accumulate in fish living far downstream.

  8. Earth

    Space Rocks’ Demo Job: Asteroids, not comets, pummeled early Earth

    An analysis of trace elements found in a variety of meteorites suggests that most of the heavenly objects that rained hell on the inner solar system about 3.9 billion years ago were asteroids, not comets.

  9. Earth


    Laboratory studies of how snow crystals change shape under fluctuating environmental conditions and computer analyses that match the patterns of past avalanches with detailed meteorological data are helping scientists uncover the secrets of avalanches.

  10. Earth

    El Niño’s coming! Is that so bad?

    Although El Niño is often blamed for ill effects that total billions of dollars, a broader analysis suggests that the United States garners substantial benefits during this weather pattern.

  11. Earth

    Shuttle yields detailed, 3-D atlas

    NASA scientists and Defense Department mapmakers are assembling billions of radar measurements made from the space shuttle Endeavour to produce what they say will be the world’s best topographic map.

  12. Earth

    Hard rock jellies: Throng of rare fossils found in Midwest quarry

    A Wisconsin sandstone quarry recently served up a rare scientific find nearly a half billion years in the making: fossils of an armada of jellyfish that stud the site’s stone slabs.