Notebook

  1. Earth

    50 years ago, nuclear blasting for gas boomed. Today it’s a bust.

    50 years ago, scientists made plans to use nuclear explosions to extract natural gas from underground. In one such experiment, the gas was released but turned out to be radioactive.

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  2. Health & Medicine

    A Pap smear can scoop up fetal cells for genome testing

    Pap smear during pregnancy could offer an early way to test for fetal genetic disorders.

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  3. Animals

    Brazilian free-tailed bats are the fastest fliers

    Ultrafast flying by one bat species leaves birds in the dust.

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  4. Animals

    An echidna’s to-do list: Sleep.