Geology

  • Deep Hydrogen
    Molecular hydrogen provides energy for many bacteria, in hot springs at Yellowstone and in rocks several kilometers beneath the surface. How did molecular hydrogen get inside these deep rocks, and what does this tell us about the origin of life on Earth?
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  • Tiny Pieces of Time
    Three-billion-year-old microcrystals are teaching scientists about planetary evolution and the processes that formed the continents of Earth. The crystals are incredibly resistant to change, and contain geological 'records' of their movements through and around the planet.
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  • Calcium Carbonate Fingerprints
    Researchers studying microbes in hot springs have made a surprising discovery about the geological record of life and the environment of Earth. The discovery may even affect how scientists search for evidence of life on other planets.
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  • A History of Starts and Stops
    Scientists have found that plate tectonics on Earth may have ground to a halt in our planet's past - and may do so again. Plate tectonics are responsible for creating geologic features like mountains and ocean basins, and play an important role in maintaining Earth's
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  • The Mystery of the Missing Matter
    A new theory may explain why the composition of Earth's mantle differs from that of chondrite -the material from which the Earth was originally formed. The theory may help us understand the formation and evolution of our planet.
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  • A Breathable Earth
    Geologists have determined when Earth may have first supported an oxygen-rich atmosphere similar to that of today. The study provides clues about how life on Earth has evolved alongside our planet's changing climate.
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  • Earth’s Life-Giving Rocks
    If minerals deep in the Earth's mantle were not able to store oxygen, there might not be life on our planet's surface. New research results provide insight into how the subsurface of our planet helps maintain the Earth's habitability.
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  • Earth's Life-Giving Rocks
    If minerals deep in the Earth's mantle were not able to store oxygen, there might not be life on our planet's surface. New research results provide insight into how the subsurface of our planet helps maintain the Earth's habitability.
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  • A Volcanic Switch
    A switch from predominantly undersea volcanoes to a mix of undersea and terrestrial ones may have helped to increase oxygen levels in the ancient Earth's atmosphere. This increase allowed for the evolution of complex oxygen-breathing organisms.
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  • Different at the Core
    Silicon isotopes from the Earth, meteorites and planetary material have shown that the Earth's core may have formed differently than that of Mars. Additionally, the data shows that atoms of silicon from the Earth and Moon were likely mixed in the early stages of their
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