Philae

TAKE TWO   Philae’s intended landing spot (left, imaged from 40 meters above the comet’s surface) was soft and sandy. A two-hour-long bounce dropped it in a craggy pit (right, with lander leg at bottom) where the ground is as hard as pumice.

Ants with caterpillar

BUILDING BODYGUARDS  Neglecting their colony tasks, ants hang around — and defend — a Narathura japonica caterpillar that oozes droplets spiked with substances that alter ant brain chemistry.

water strider

FLOATING  Like a real water strider (left), new robotic insects can rest on water and jump off it. 

golden wolf and jackal

SEEING DOUBLE  Although they look alike, the African golden wolf (left) should be considered a separate species from the Eurasian golden jackal (right), scientists argue.



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