News

  1. Psychology

    Ratio for a good life exposed as ‘nonsense’

    A heralded calculation of people’s ability to flourish is a mathematical mirage, researchers say.

    By Bruce Bower
  2. Humans

    DNA reveals details of the peopling of the Americas

    Migrants came in three distinct waves that interbred once in the New World.

    By Tina Hesman Saey
  3. Earth

    Emissions could fuel global warming for millennia

    Climate simulation projects effects of greenhouse gases farther into the future than ever before.

    By Jessica Shugart
  4. Tech

    Hybrid race car of transistors debuts

    A new transistor combines the essential features of high speed and low energy consumption.

    By Andrew Grant
  5. Health & Medicine

    Vaccine protects against malaria in early test

    A series of shots enables volunteers to fend off a live infection by the disease-causing parasite.