News

  1. Space

    Lopsided stellar disks help black holes guzzle gas

    Theorists have found a new recipe for feeding the supermassive centers of galaxies.

    By Ron Cowen
  2. Life

    Rise of female weaponry driven by poop fights

    Motherly fights for excrement in one species of dung beetle have favored the evolution of a special female horn.

    By Susan Milius
  3. Health & Medicine

    Coffee not linked to heart arrhythmia

    A large survey of insured people finds no extra hospitalizations in java swillers.

    By Nathan Seppa
  4. Paleontology

    Ancient DNA suggests polar bears evolved recently

    A study of a rare Norwegian fossil narrows down when polar bears evolved and finds they are closely related to modern-day brown bears in Alaska.