News

  1. Humans

    Genetic diversity exploded in recent millennia

    Among hundreds of thousands of DNA variants identified in a study, a large majority arose in the past 5,000 years.

    By Tina Hesman Saey
  2. Life

    Blue whales’ diet and exercise rolled into one

    Marine predator performs underwater acrobatics for best chance at catching a meal.

    By Susan Milius
  3. Health & Medicine

    Auditory test predicts coma awakening

    While all patients in a new study could discriminate between sounds early on, those whose ability improved during the first 48 hours wound up recovering.

    By Tanya Lewis
  4. Life

    Trees worldwide a sip away from dehydration

    Plumbing systems operate on a razor’s edge, making even moist forests highly vulnerable to drought.