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  1. Planetary Science

    Eris dwarfs Pluto

    Ex-planet Pluto suffers another demotion, as observations show that it's much less massive than Eris, another distant denizen of the outer solar system.

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  2. Tech

    A computer in every cell

    Artificial genes inserted into cells make RNA molecules that can perform logical computations.

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  3. 19849

    With respect to this article on kimberlites, diamonds, and mantle fractures, may I suggest that the fractures in question emanate from hypervelocity bolide impacts on Earth. There is ample spatial correlation between impact craters formed by oblique impacts with crustal-fracture systems that propagated outward along the direction of impact. Gregory C. HermanNew Jersey Geological SurveyTrenton, […]

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  4. Earth

    A Gemstone’s Wild Ride

    Diamonds may be carried to the surface in explosions of gas and rock fizzing up from deep within Earth's mantle.