News

  1. Astronomy

    Middling black hole may be hiding in star cluster

    A black hole with about 2,200 times the mass of the sun has been detected. If confirmed, it could represent a new type of gas-starved black holes and hint at how supermassive ones may form.

    By Ashley Yeager
  2. Climate

    Hot nests, not vanishing males, are bigger sea turtle threat

    Climate change overheating sea turtle nestlings may be a greater danger than temperature-induced shifts in their sex ratios.

    By Susan Milius
  3. Psychology

    Long-lasting mental health isn’t normal

    Those who stay mentally healthy from childhood to middle age are exceptions to the rule.

    By Bruce Bower
  4. Earth

    Oxygen flooded Earth’s atmosphere earlier than thought

    The Great Oxidation Event that enabled the eventual evolution of complex life began 100 million years earlier than once thought, new dating of South African rock suggests.