A fresh look at a fungus-insect partnership that biologists have studied for more than a century uncovers a role for bacteria.

Brains are probably not what powers the invasive bee’s takeover from European honeybees

Female crab spiders switch colors to match flowers but may not fool their prey (p. 13)

When mistaken for females, the guys release an alarming pheromone. (p. 13)

For on spider species, feeding on blood-gorged mosquitoes adds charm to a mate (p. 12)

A 37-million-year-old jaw suggests the famous fossil Darwinius does not, as had been suggested, fill a gap in human evolution.

After some time to play around with a mirror, pigs figure out what to do when they glimpse a reflection of food.

It took herculean effort, but Madagascar crafters created an extraordinary piece of woven art from spider silk.

Yellow crazy ants can get so annoying that birds don’t eat their normal fruits, a new study finds. (p. 13)

Hurray for avian garbage collectors.

Man-made music inspired by tamarin calls seems to alter the primates’ emotions, a new study suggests. (p. 10)

A food fad among introduced rats has apparently crashed a once-thriving population of Hawaii’s famed endemic tree snails.

Nanostructures on a preserved feather offer the first fossil evidence of bird colors not from pigments, a new study says.