Earth

WATER, WATER EVERYWHERE  Earth is a wet planet that formed in a dry part of the solar system. How our planet’s water arrived may be a story of big, bullying planets and ice-filled asteroids. 

ancient species of wading bird

WATER WADER  An ancient species of wading bird (illustrated) that lived about 130 million years ago is the oldest known avian relative of modern birds.

Bath salts

DRUGS BY DESIGN Bath salts (above) are packaged as a product one might use in the tub. They’ve been linked to deaths.

micrograph of mouse's optic nerve

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.



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