Vol. 193 No. 4
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More Stories from the March 3, 2018 issue

  1. Particle Physics

    Clumps of dark matter could be lurking undetected in our galaxy

    Dark matter, assumed to form featureless blobs, might clump together into smaller objects.

  2. Environment

    Plastic pollution increases risk of devastating disease in corals

    Researchers estimate about 11 billion pieces of plastic are polluting Asia-Pacific corals, raising the risk of disease at scores of reefs.

  3. Genetics

    Scientists find 10 new defense systems used by bacteria

    Scientists identify 10 groups of genes that appear to govern defense systems used by bacteria against virus attacks.

  4. Animals

    Slower speed, tricky turns give prey a chance against cheetahs and lions

    A bonanza of data on wild predators running shows that hunting is more than sprinting.

  5. Astronomy

    Universes with no weak force might still have stars and life

    An alternate universe that lacks one of the four fundamental forces might still have galaxies, stars, planets and perhaps life, a new study suggests.

  6. Animals

    A killer whale gives a raspberry and says ‘hello’

    Tests of imitating sounds finds that orcas can sort of mimic humans.

  7. Archaeology

    Sharp stones found in India signal surprisingly early toolmaking advances

    Toolmaking revolution reached what’s now India before Homo sapiens did, a new study suggests.

  8. Earth

    Gassy farm soils are a shockingly large source of these air pollutants

    California’s farm soils produce a surprisingly large amount of smog-causing air pollutants.

  9. Health & Medicine

    Zika may not be the only virus of its kind that can damage a fetus

    Zika may not be alone among flaviviruses in its ability to harm a developing fetus, a new study in mice finds.

  10. Tech

    New laser emits a more stable, energy-efficient light beam

    A new type of laser could emit more stable, energy-efficient light beams than its conventional counterparts.

  11. Neuroscience

    A blood test could predict the risk of Alzheimer’s disease

    A blood test can predict the presence of an Alzheimer’s-related protein in the brain.

  12. Animals

    It’s a bad idea for a toad to swallow a bombardier beetle

    Toads are tough. But there are some insects even they shouldn’t swallow.

  13. Planetary Science

    What will it take to go to Venus?

    Undeterred by funding woes, scientists are scraping together ideas to tackle heat, pressure and acidity challenges of landing on Venus.

  14. Health & Medicine

    50 years ago, early organ transplants brought triumph and tragedy

    In 1968, the liver transplant field had its first small successes. Now, more than 30,000 patients in the U.S. receive a donated liver each year.