VISITING THE RELATIVES At a deep spot (red dot) on the seafloor between Norway and Greenland not far from the hydrothermal vents at Loki’s Castle, mud has yielded DNA samples from microbes that may be the closest kin yet known to complex life.
A. Spang et al/Nature 2015
WIDE OPEN Fin whales and others like them have stretchy nerves (yellow) in their mouths and tongues that help the whales open their mouths wide to swallow a lot of prey.
Vogl et al./Current Biology 2015
NERVE PROTECTORS The glowing cells in this micrograph of a mouse’s optic nerve help shield electrical signals passing between eyes and brain. The Brainbow technique allows scientists to visualize how the cells work together.