Vol. 197 No. 8
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More Stories from the April 25, 2020 issue

  1. Health & Medicine

    The number of steps per day, not speed, is linked to mortality rate

    Researchers report an association between the total number of steps a person takes each day and the rate of death from any cause.

  2. Paleontology

    Fossils of a new dromaeosaur date to the end of the Age of Dinosaurs

    Fossils from a new dromaeosaur recovered from New Mexico suggest these fierce predators were diversifying up to the end of the Age of Dinosaurs.

  3. Environment

    Legos may take hundreds of years to break down in the ocean

    Sturdy types of plastic may persist in seawater for much long than scientists previously thought.

  4. Math

    How large a gathering is too large during the coronavirus pandemic?

    Mathematical models explain why large gatherings are especially dangerous in an epidemic, and identify how large is too large.

  5. Planetary Science

    If Pluto has a subsurface ocean, it may be old and deep

    New analyses of images from NASA’s New Horizons spacecraft suggest that Pluto may have had a sea beneath its icy shell for roughly 4.5 billion years.

  6. Space

    Quasar winds with record energy levels were seen fleeing a distant galaxy

    The Hubble Space Telescope has seen the most energetic quasar winds yet, showing these active black holes can blow star-forming gas out of galaxies.

  7. Physics

    A mysterious superconductor’s wave could reveal the physics behind the materials

    Scientists finally spotted a pair-density wave in a high-temperature superconductor.

  8. Genetics

    Squid edit their genetic material in a uniquely weird place

    Some squids’ seeming ability to edit RNA on the fly could help scientists develop a technique much like the DNA-editing tool CRISPR, but for RNA.

  9. Health & Medicine

    A tooth-enamel protein is found in eyes with a common form of macular degeneration

    Researchers linked a tooth-enamel protein with calcium deposits in eyes suffering ‘dry’ AMD, which could lead to treatments for the vision disorder.

  10. Archaeology

    Neandertals’ extensive seafood menu rivals that of ancient humans

    Finds from a coastal cave in Portugal reveal repeated ocean foraging for this European hominid.

  11. Archaeology

    The Nazareth Inscription’s origins may refute ties to Jesus’ resurrection

    Chemical analysis shows the tablet’s marble came from a Greek island, challenging the idea the decree concerned early Christianity in the Middle East.

  12. Earth

    Roughly 90 million years ago, a rainforest grew near the South Pole

    A forest flourished within 1,000 kilometers of the South Pole, probably because of high atmospheric carbon dioxide levels and an ice-free Antarctica.

  13. Neuroscience

    ‘The Idea of the Brain’ explores the evolution of neuroscience

    Despite advances, much about the human brain is still a mystery, a new book shows

  14. Physics

    50 years ago, superconductors started feeling the pressure

    Today, high-pressure superconductors are a hot topic. 50 years ago, scientists were just starting to explore the possibilities.