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  1. Master gene found for insect smell

    A single gene may oversee the sense of smell in a variety of insect species.

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  2. Anthropology

    Inside view of our wee, ancient cousins

    A tiny, humanlike species that inhabited an Indonesian island more than 20,000 years ago possessed a brain that shared some organizational features with Homo erectus, a large-brained human ancestor that thought in complex ways.

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  3. Faces elicit strong emotions in autism

    Children with autism avoid eye contact because they experience uncomfortably intense emotional reactions when looking at faces.

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  4. Physics

    Primordial Nukes

    The rocky remains of nuclear reactors that formed spontaneously in African uranium deposits 2 billion years ago are yielding striking new details about their operation as well as signs that a fundamental aspect of the universe may have once been stronger than it is today.