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  1. Physics

    Thermonuclear Squeeze: Altered method extends bubble-fusion claim

    A technique that some scientists claim generates thermonuclear fusion in a benchtop apparatus apparently works even without its controversial neutron trigger.

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  2. Astronomy

    Pay Dirt: Cometary dust collector comes home

    A capsule containing dust collected from the comet Wild-2 safely landed in the Utah desert.

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  3. Intrinsic Remedies for Pain: Placebo effect may take various paths in brain

    The brain draws on a range of pain-fighting options when people receive sham treatments for pain.

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  4. Earth

    Diabetes from a Plastic? Estrogen mimic provokes insulin resistance

    Exposure to trace amounts of an estrogenlike ingredient of polycarbonate plastic may increase the risk of diabetes, experiments in mice show.