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  • Genomics Meets Geology
    Chemist Steven A. Benner and his colleagues are combining chemistry, geological history and paleontology in an approach aimed at better understanding of life on Earth.
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  • Guerrero Negro
    Guerrero Negro is a popular destination for ecotourists to gaze at the gray whales, but scientists go to investigate an ecosystem that hold important clues to what life was like on early Earth.
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  • Mars: Dead or Alive?
    Recent research on the planet has convinced some scientists that Mars may still be geologically active.
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  • How Small Can Life Be?
    As advanced microscopes enable us to peer deeper into the realms of inner space, biologists have been faced with a vexing question: Is there a size limit on life?
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  • The Meaning of Life
    Sitting beneath a dark night sky, looking up at the vast array of stars, what human has not wondered, "Are we alone?
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  • A Pregnancy Test for Mars
    The test that tells women they are pregnant might also be able to find signs of living organisms on Mars.
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  • Mars Odyssey Finds Large Water Concentrations
    Early results from the Mars Odyssey orbiter show the signature of large water concentrations.
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  • Did Hades Freeze Over?
    Initially, the surface of our planet was a fiery, molten stew. Within a few million years, the crust cooled and water vapor rained down to form the oceans, where life may have made it's first appearance.
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  • Galactic Habitable Zones
    Our Milky Way Galaxy is unusual in that it is one of the most massive galaxies in the nearby universe. Our Solar System also seems to have qualities that make it rather unique. These qualities make the Sun one of the few stars in
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  • Galactic Habitable Zones
    Our Milky Way Galaxy is unusual in that it is one of the most massive galaxies in the nearby universe. Our Solar System also seems to have qualities that make it rather unique. These qualities make the Sun one of the few stars in the
    more...
  • The Birth and Death of Embryonic Planets
    Researchers study how planets form around stars in the Orion Nebula, hoping to understand better how planets in our own solar system formed.
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  • Life’s Baby Steps
    Billions of years ago, amino acids somehow linked together to form chainlike molecules. Now scientists have discovered what may be a key step in this process - a step that has baffled researchers for more than a half a century.
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  • How Jupiter Got Big
    How did the largest planet in our solar system form? New theories on how planets like Jupiter form put traditional theories to the test.
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  • Unpuzzling Proteins
    Thanks to a new supercomputer, scientists may be a step closer to understanding one of nature's more difficult puzzles.
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  • Reflections From a Warm Little Pond
    Scientists theorize possible scenarios on how life could have first originated on Earth.
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