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  1. Chemistry

    A pinch of saturated fat could make tempering chocolate a breeze

    Adding a small amount of fatty molecules to cocoa butter could simplify the labor-intensive tempering process to create melt-in-your-mouth chocolate.

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  2. Earth

    This pictogram is one of the oldest known accounts of earthquakes in the Americas

    The Telleriano-Remensis, a famous codex written by a pre-Hispanic civilization, describes 12 quakes that rocked the Americas from 1460 to 1542.

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  3. Readers discuss corn debris biofuel, the color of ancient Mars’ oceans and more

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  4. What can science tell us about living a good life?

    Editor in chief Nancy Shute discusses what science can tell us about finding fulfillment, even in disastrous times

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  5. Health & Medicine

    How personalized brain organoids could help us demystify disorders

    Personalized clusters of brain cells made from people with Rett syndrome had abnormal activity, showing potential for studying how human brains go awry.