Vol. 201 No. 8
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More Stories from the April 23, 2022 issue

  1. Paleontology

    Spinosaurus’ dense bones fuel debate over whether some dinosaurs could swim

    New evidence that Spinosaurus and its kin hunted underwater won't be the last word on whether some dinosaurs were swimmers.

  2. Astronomy

    NASA’s exoplanet count surges past 5,000

    With a new batch of 60 confirmed exoplanets, the number of known worlds in our galaxy reaches another milestone.

  3. Animals

    Here’s how boa constrictors squeeze their dinner without suffocating themselves

    Carefully controlled breathing allows boa constrictors to pull off their signature move without cutting off their own air supply.

  4. Astronomy

    Here’s the best timeline yet for the Milky Way’s big events

    A new study puts more precise dates on when the Milky Way formed its thick disk and collided with a neighboring galaxy.

  5. Life

    How a virus turns caterpillars into zombies doomed to climb to their deaths

    By manipulating genes used in vision, a virus sends its host caterpillar on a doomed quest for sunlight, increasing the chances for viral spread.

  6. Genetics

    We finally have a fully complete human genome

    Finding the missing 8 percent of the human genome gives researchers a more powerful tool to better understand human health, disease and evolution.

  7. Paleontology

    A new saber-toothed mammal was among the first hypercarnivores

    A 42-million-year-old jawbone with slicing teeth and a gap to fit saberlike teeth is pegged to a new species of the mysterious Machaeroidine group.

  8. Climate

    Forests help reduce global warming in more ways than one

    Trees are often touted as bulwarks against climate change for their capacity to sequester carbon, but that’s just one part of the story.

  9. Life

    Lost genes may help explain how vampire bats survive on blood alone

    The 13 identified genes underpin a range of physiological and behavioral strategies that the bats have evolved.

  10. Health & Medicine

    50 years ago, scientists were seeking the cause of psoriasis

    In the 1970s, scientists found a link between a chemical messenger and psoriasis, a complex inflammatory skin disorder.

  11. Astronomy

    The universe’s background starlight is twice as bright as expected

    Images from the New Horizons spacecraft suggest that light from all known galaxies accounts for only half of the cosmos’ visible background glow.