News

  1. Earth

    Every six years, Earth spins slightly faster and then slower

    Changes in day length linked to workings of Earth's core.

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  2. Planetary Science

    Gas, not planets, may be source of rings around stars

    Interactions between gas and dust may form elliptical patterns.

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  3. Life

    Bacterial molecules may prevent inflammatory bowel disease

    Common compounds produced by gut microbes quench colitis in mice.

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  4. Space

    Interstellar chemistry makes use of quantum shortcut

    Reactions in the frigid cold of space are sped by a quirk of physics, researchers propose.

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  5. Anthropology

    Agriculture’s roots spread east to Iran

    Dig supports prolonged development of domesticated crops at ancient sites across the Fertile Crescent.