Scientists have known for years that a lattice of blood vessels nourishes cells in the retina that allow us to see -- but it's been a mystery how the intricate structure is created. Now, researchers ...

The cognitive abilities of a fruit-fly larva may not seem particularly noteworthy. This creature—the fly’s early, wormlike phase—is just about capable of sensing its environment, searching for food ...

Brain cells are constantly swallowing material from the fluid that surrounds them - signaling molecules, nutrients, even ...