News

  1. Oceans

    Oxygen in Black Sea has declined by more than a third since 1955

    The Black Sea’s oxygen-rich surface layer shrank by more than a third from 1955 through 2013, compressing marine habitats and bringing toxic hydrogen sulfide closer to the surface.

    By Thomas Sumner
  2. Genetics

    Chemical tags on DNA appear to differ between gay and straight men

    DNA marks distinguished homosexual men from heterosexual men with in a small twin study.

    By Tina Hesman Saey
  3. Humans

    Into Africa: Ancient skeleton sheds light on reverse migration

    Ancient man’s DNA helps reveal extent of Eurasian farmers’ back-to-Africa migration some 3,000 years ago.

    By Bruce Bower
  4. Science & Society

    Nobels note neutrinos, DNA, drugs

    The Nobel Prizes in physics, chemistry and physiology or medicine ran the gamut this year, honoring both fundamental science discoveries and research with real-world impacts.