astrocytes

GIFT GIVER  Star-shaped astrocytes (green) may donate mitochondria to nerve cells in distress, helping the brain escape damage from stroke and possibly other maladies, a new study suggests. 

iron

PRECIOUS METAL  Geochemists explore platinum, gold and other rare elements that are attracted to iron to understand how Earth's core formed billions of years ago. 

illustration of SPIDER scope

BIG DREAMS FOR SMALL SCOPE  Lockheed Martin imagines a relatively small and light advanced SPIDER telescope with thousands of tiny lenses on one face of a surveillance orbiter.

snake eating embryos

RUN AWAY When predatory snakes take a bite out of clusters of unhatched red-eyed tree frog embryos, some manage to escape the slaughter by wriggling out of their eggs to safety. 



Science News