Search Results for: Bears

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6,726 results
  1. Readers discuss big bacteria, gravitational radar and more

  2. Paleontology

    Vampire squid are gentle blobs. But this ancestor was a fierce hunter

    New fossil analyses of 164-million-year-old ancestors of today’s vampire squid show the ancient cephalopods had muscular bodies and powerful suckers.

  3. Animals

    Polar bears sometimes bludgeon walruses to death with stones or ice

    Inuit reports of polar bears using tools to kill walruses were historically dismissed as stories, but new research suggests the behavior does occur.

  4. Animals

    Whale sharks may be the world’s largest omnivores

    An analysis of the sharks’ skin shows that the animals eat and digest algae.

  5. Paleontology

    Glowing spider fossils may exist thanks to tiny algae’s goo 

    Analyzing 22-million-year-old spider fossils from France revealed that they were covered in a tarry black substance that fluoresces.

  6. Space

    What has Perseverance found in two years on Mars?

    NASA's Perseverance rover has turned up volcanic rocks, signs of flowing water and some of the materials necessary for life.

  7. Anthropology

    North America’s oldest skull surgery dates to at least 3,000 years ago

    Bone regrowth suggests the man, who lived in what’s now Alabama, survived a procedure to treat brain swelling by scraping a hole out of his forehead.

  8. Anthropology

    A surprising food may have been a staple of the real Paleo diet: rotten meat

    The realization that people have long eaten putrid foods has archaeologists rethinking what Neandertals and other ancient hominids ate.

  9. Space

    Six months in space leads to a decade’s worth of long-term bone loss

    Even after a year of recovery in Earth’s gravity, astronauts who’d been in space six months or more still had bone loss equal to a decade of aging.

  10. Health & Medicine

    How living in a pandemic distorts our sense of time

    The pandemic has distorted people’s perception of time. That could have implications for collective well-being.

  11. Astronomy

    ‘Goldilocks’ stars may pose challenges for any nearby habitable planets

    Orange dwarfs emit far-ultraviolet light long after birth, stressing the atmospheres of potentially life-bearing worlds.

  12. Animals

    Here are 7 incredible things we learned this year that animals can do

    From wielding weapons to walking on the underside of water, these are the creature capabilities that most impressed us in 2021.