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All Stories by Allison Gasparini
Taking a cue from Hansel and Gretel, scientists propose a way for rovers to send back data from treacherous terrain.
The global population hit this milestone on November 15, according to an estimate from the United Nations.
Most people know solids, liquids and gases — but what about the four other states of matter?
Wrinkles in the sun’s outer atmosphere might trick the eye into seeing glowing arches, scientists now report.