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  1. Toxin Buster: New technique makes cottonseeds edible

    Scientists have engineered cotton plants that produce seeds missing a toxic compound that had previously made them inedible.

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  2. Math

    Geometry in Court

    The Pythagorean theorem and geometric series played leading roles in two legal disputes.

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  3. Tech

    Ancients made nanotech hair dye

    A hair-darkening paste invented thousands of years ago forms lead-and-sulfur nanocrystals remarkably similar to those made in today's nanotechnology labs.

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  4. 19761

    Since when are “nanoscale” and “nanotech” interchangeable? Just because somebody uses something that is small doesn’t make it “nanotech.” Talcum powder is ultra fine too.