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STAYING APART  Some European hunter-gatherers resisted taking up agriculture and didn’t breed with early farmers, suggests DNA from the skeleton of a young hunter-gatherer woman (shown) and other foragers buried at the Ajvide site on Sweden’s Gotland island.

ENTANGLED  Tiny electrical circuits have given physicists unprecedented control over the quantum states of units of information called qubits. The qubits appear as five crosses (center).

TAGGED  One of the first two sound-recording tags (small, green device) ever to go for a ride on an Antarctic minke whale stays attached by suction cup for hours. The tag’s recording may have solved a long-standing acoustic mystery.

PAIN, NO GAIN  Pain made female mice less interested in sex but had no such effect on males, a new study finds.

RING REMNANTS  The mighty ridge adorning Saturn’s moon Iapetus has steep slopes, which researchers suggest is a sign that debris falling from space stacked up and formed mountains on the moon’s surface.



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