In this issue:
"Life Springs": Deep oceans were thought to hold life's origins. New evidence points instead to an active volcanic landscape.
"Building a Better Harvest": Scientists are learning to manipulate the complex conversation that plants have with microbes, pests, nutrients, and other elements of the phytobiome in hopes of averting a future famine.
"Talking to Ourselves": Studies of the conversations people have with themselves open a window on the hidden working of the mind.
"Requiem for the Vaquita": What the demise of a small Mexican porpoise tells us about extinction in the 21st century.