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

Streamside wildflower holds back on leaf competition when roots meet close kin (p. 13)

Scientists have traced the reappearance of cotton pests in west-central Texas to a tropical storm.

Study tracks European eels for the first 1,300 kilometers of their migration.

New study may help scientists improve control of invasive fire ants

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

Most of the birds in California’s Sierra Nevada range are on the move in response to recent climate changes.

DNA of infamous Phytophthora microbe reveals big, quick-changing zones, possibly the key to the pathogen’s vexing adaptability

Page ranking system inspires algorithm for predicting food webs’ vulnerability. (p. 10)

Infection may be driving ants to set their jaws in low-hanging leaves before they die. (p. 12)

Some of the ocean’s small swimmers may be having a big impact on ocean mixing. (p. 14)

A new study links the simian immunodeficiency virus to serious AIDS-like illness in a wild population. (p. 5)

In the wild, a culinary kick comes with risks to the plant. (p. 12)

Understanding long-term changes in wildfire patterns challenges scientists from multiple disciplines. (p. 26)

Scientists have revealed new details about the genes — and the goo — that enable luminescent bacteria to colonize their symbiotic marine partner.