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  1. Animals

    Retaking Flight: Some insects that didn’t use it didn’t lose it

    Stick insects may have done what biologists once thought was impossible: lose something as complicated as a wing in the course of evolution but recover it millions of years later.

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  2. Earth

    Predicting geomagnetic storms

    Recent observations with an Earth-orbiting spacecraft may provide new ways to predict when solar temper tantrums will cause the geomagnetic storms that disrupt communications systems on Earth and harm satellites.

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  3. Humans

    From the June 28, 1930, issue

    MULTIPLE AILERONS When men first began to dream of flying like birds (which they have done ever since the legendary Daedalus), they watched the flight of birds, hoping to catch their trick and learn to imitate them.