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  1. Health & Medicine

    Gestures speak volumes in the brain

    A new brain-imaging study suggests that an understanding of spoken language relies on changing sets of brain networks that exploit acoustic and visual cues.

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  2. Earth

    Exxon Valdez 20 Years Later

    March 24 marked the 20th anniversary of the Exxon Valdez oil spill. The effects are still obvious today. A series of blogs from senior editor Janet Raloff describes the continuing aftermath.

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  3. Health & Medicine

    Male circumcision fends off the most common STDs

    Male circumcision prevents some genital herpes and human papillomavirus infections, a study in Ugandan adolescent boys and men shows.

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  4. Space

    Asteroid tracked from space to Earth

    For the first time, researchers followed an asteroid from space to its crash into Earth, providing the opportunity to study an asteroid in a new way.