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  1. Space

    A lunar magnetic field may have lasted for only a short time

    New analyses of Apollo-era lunar rocks suggest that any magnetosphere that the moon ever had endured for no more than 500 million years.

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  2. Physics

    A bounty of potential gravitational wave events hints at exciting possibilities

    Of about 1,200 possible events, most are probably false alarms, but some could be ripples in spacetime that are especially hard to spot.

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  3. Animals

    Snake-eating spiders are surprisingly common

    Spiders from at least 11 families feed on serpents many times their size, employing a host of tactics to turn even venomous snakes into soup.