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  • Getting WISE About Nemesis
    Is our Sun part of a binary star system? An unseen companion star, nicknamed Nemesis, may be sending comets towards Earth. If Nemesis exists, NASA s new WISE telescope should be able to spot it.
  • The Battle Between the Earth and Sun
    Scientists have discovered that the Earth s magnetic field 3.5 billion years ago was only half as strong as it is today. This could have had profound implications for the evolution of the biosphere, w
  • Animals in a Snowball
    Geologists have found new evidence to support the snowball Earth thoery, where sea ice extended all the way to the equator. Such an icy environment may have had a profound effect on the evolution of
  • Fuel to the Fire
    Fires are a normal and healthy part of the natural cycle - yet the severity of duration of fire seasons seem to be on the rise. This could be due to a drier, warmer climate in some parts of the world
  • It Had To Be an Asteroid
    According to a comprehensive review of all the available evidence, the extinction of the dinosaurs and half the species on Earth was caused by an asteroid colliding with our planet. A panel of 41 inte
  • Mars River Channels Made by Lava?
    New data indicates that at least one of the meandering channels on the surface of Mars was formed by flowing lava rather than liquid water. The study could help astrobiologists determine the likelihoo
  • Time Quake
    The magnitude 8.8 earthquake that struck Chile may have had dramatic global consequences. Scientists believe that the quake was strong enough to change the Earth s rotation and may have shortened the
  • Avatar s New Twist on Plants
    Although they re not nominated for an Academy Award, plants play a central role in the blockbuster movie "Avatar." A botanist provided the science behind how these unusual organisms may have evolved.
  • Toxic Shock
    Asteroid impacts may not only account for extinctions in the oceans and on land 65 million years ago. According to new research, the resulting dust, darkness and toxic metal contamination following im
  • Into the Mouth of a Volcano
    Scientists are testing a miniature laboratory that could be used to study the composition of rocks and atmospheres on moons, asteroids and planets in the solar system. A recent field test of the instr

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