News

  1. Life

    Lab-grown liver raises hopes but draws criticism

    Though human cells spontaneously group into rudimentary organs, some scientists say work is very preliminary.

    By Meghan Rosen
  2. Physics

    Particles defy gravity, float upstream

    Inspired by tea leaves’ reverse route into a kettle, physicists demonstrate that water’s surface tension allows unexpected movement.

    By Andrew Grant
  3. Animals

    Gut microbes may put barrier between species

    Wiping out gut bacteria in wasps saves crossbred offspring from death, suggesting that microbes may play a role in speciation.

    By Susan Milius
  4. Animals

    Honeybees use right antennae to tell friend from foe

    Asymmetry in sense of smell alters insects' behavior in lab tests.