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113,199+ results

113,199+ results for:

  1. Genetics

    Ancient Siberian bones clarify Native American origins

    Some New World ancestors came from western Eurasia, not East Asia.

    By Tina Hesman Saey
  2. Planetary Science

    Ancient Martian meteorite preserves chunks of planet’s early crust

    Rock could reveal what Mars was like 4.4 billion years ago.

    By Andrew Grant
  3. Plants

    Tannosome

    A newly discovered structure where mouth-puckering compounds called tannins form inside plant cells.

    By Susan Milius
  4. Animals

    Comb jelly immune system can spot old enemies

    Animal at base of family tree could help researchers understand the evolution of immunity.

    By Susan Milius
  5. Life

    Blood clotting disorder blocked in dogs

    Gene therapy stopped severe bleeding in dogs with the blood clotting disorder hemophilia.

    By Ashley Yeager
  6. Genetics

    Sexy male mice have competitive moms

    Moms allowed to compete for mates produce sons that make sexy pheromones, live hard and die young. How? Epigenetics.

    By Bethany Brookshire
  7. Ecosystems

    Virus-blocking insects taking over Vietnamese island

    Field trial tests mosquitoes that may stop the spread of dengue infection.

    By Beth Mole
  8. Health & Medicine

    Cage temps change tumor growth in mice

    Cooler living conditions may influence lab mice's responses to experimental cancer therapies that target the immune system.

    By Ashley Yeager
  9. Anthropology

    Human ancestors threw stone-tipped spears at prey

    African discoveries show that hunting weapons thrown from a distance appeared by 279,000 years ago.

    By Bruce Bower
  10. Climate

    Arctic algae crusts preserve climate data

    The records show that sea-ice cover has been declining since 1850.

    By Ashley Yeager
  11. Planetary Science

    MAVEN spacecraft blasts off to Mars

    In September 2014, the satellite will begin studying the Red Planet's upper atmosphere.

    By Ashley Yeager
  12. Health & Medicine

    Quick cooling after cardiac arrest questioned

    For a decade, doctors have made induced hypothermia standard practice.

    By Laura Beil