Search Results for: Bears

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6,701 results
  1. An overhead image of a small deer tooth pendant with a hole drilled into it
    Archaeology

    Ancient human DNA was extracted from a 20,000-year-old deer tooth pendant

    Insights into Stone Age people’s lives may soon come from a new, nondestructive DNA extraction method.

    By Bruce Bower

  2. Good with tools? You may be a cockatoo

    Editor in chief Nancy Shute talks about smart animals, from tool-using cockatoos to "self-aware" fish.

    By Nancy Shute
  3. A Siberian landscape marred by an oil spill
    Climate

    Thawing permafrost may unleash industrial pollution across the Arctic

    As the frozen ground warms due to climate change, industrial pollutants could flow free from thousands of sites across the Arctic.

    By Nikk Ogasa
  4. A close up photo of three yellow crazy ants on a bright white background.
    Animals

    Invasive yellow crazy ants create male ‘chimeras’ to reproduce

    Yellow crazy ants are first known species where chimerism is required in males: Each of their cells holds DNA from just one of two genetic lineages.

    By McKenzie Prillaman
  5. An ancient ivory comb with a row of teeth faint signs of engraving
    Humans

    This ancient Canaanite comb is engraved with a plea against lice

    The Canaanite comb bears the earliest known instance of a complete sentence written in a phonetic alphabet, researchers say.

    By Freda Kreier
  6. A diamond anvil crunches a material viewed through a microscope.
    Physics

    Superconductor research surges forward despite controversy over stunning claims

    After retractions from Ranga Dias’ group, high-pressure physicists are feeling the squeeze, fearing the controversy will tarnish other research.

    By Emily Conover
  7. An artist reconstruction of a grave holding several bones.
    Anthropology

    Homo naledi may have dug cave graves and carved marks into cave walls

    Proposed discoveries of humanlike activities by these ancient, small-brained hominids have elicited skepticism from some researchers.

    By Bruce Bower
  8. An image of a black hole
    Math

    Here’s a peek into the mathematics of black holes

    The universe tells us slowly rotating black holes are stable. A nearly 1,000-page proof confirms it.

    By Rachel Crowell
  9. Two orca whales breaching.
    Life

    Orca moms baby their adult sons. That favoritism pays off — eventually

    By sharing fish with their adult sons, orca moms may skimp on nutrition, cutting their chances of more offspring but boosting the odds for grandwhales.

    By Susan Milius
  10. photo of a crowd of people in New York City
    Humans

    The world population has now reached 8 billion

    In a first, the global population surpassed this milestone on November 15, according to a projection from the United Nations.

    By Allison Gasparini
  11. Enceladus, the moon of Saturn, shown partly illuminated against the backdrop of space
    Planetary Science

    The last vital ingredient for life has been discovered on Enceladus

    The underground ocean on Saturn’s icy moon may contain phosphorus in concentrations thousands of times greater than those found in Earth’s ocean.

    By Nikk Ogasa
  12. illustration of two Scleromochlus taylori reptiles surrounded by fern leaves
    Paleontology

    Pterosaurs may have evolved from tiny, fast-running reptiles

    A mysterious little ground-dwelling reptile unearthed in a Scottish sandstone over 100 years ago turns out to be part of a famous flying family.

    By Carolyn Gramling