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.

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.

A LITTLE DROP WILL DO YOU  A little resveratrol may go a long way toward preventing colon cancer. Small doses of the chemical found in red wine and grapes may be better than big ones, researchers find. Researchers caution, however, against tippling: Alcohol in wine actually promotes colon cancer.

CONNECT THE NEURONS  In this computer rendering of a bit of mouse brain based on scanning electron images, some nerve cell dendrites touch an axon (green) and make connections (orange), while other dendrites don’t (blue).



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