1. Tech

    Robosaur roams with spring in its step

    The novel dinosaur robot Troodon takes two-legged walking machines onto new terrain.

  2. Tech

    Polymer takes dim view of explosives

    By spraying surfaces with a light-emitting polymer, researchers have taken a step toward making new sensors for traces of common explosives.

  3. Paleontology

    Sahara yields second-largest dinosaur

    Excavations near an Egyptian oasis have unearthed the fossils of an animal that probably ranks as the second-most-massive dinosaur known.

  4. Paleontology

    Fossil footprints could be monumental

    Trace fossils found in a vacant lot in a small town in Utah, including the footprints of meat-eating dinosaurs, could soon be protected as part of a new U.S. national monument.

  5. Chemistry

    Hassium holds its place at the table

    Researchers have performed the first ever chemical studies on the element hassium.

  6. Chemistry

    Chemists make hard-to-catch molecules

    Chemists have devised a new way to stabilize highly reactive molecules called carbenes.

  7. Physics

    New probe zooms in on midgets of magnetism

    A new microscope for peering at magnetic materials provides the first glimpses of how such materials behave on a scale of only tens of atoms.

  8. Earth

    Alaska’s coastal permafrost is eroding

    Aerial photographs taken over the past 50 years show that Alaska's coastlines of permafrost aren't that permanent after all.

  9. Earth

    More acid rain in East Asia’s future

    Large increases in Asian industrial emissions of nitrogen oxides in the next 30 years could lead to a tripling of the acid rain there due to those pollutants.

  10. Earth

    Midlatitude bogs store carbon best

    Sediments in lakes and bogs along the eastern coast of the United States show that midlatitude bodies of water have sequestered higher amounts of carbon than others since the last ice age.

  11. Earth

    Seismic simulations help track tanks

    New computer models developed to analyze how seismic vibrations travel through uneven terrain can also be used to identify and track heavy vehicles such as tanks and trains.

  12. Earth

    Large earthquake would ravage Oregon

    A magnitude 8.5 earthquake off the coast of Oregon would devastate portions of the state, kill thousands of residents, and wrack the economy there for more than a decade.