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John Hart / Wisconsin State Journal via AP

Environment

That Arctic blast hitting the U.S.? There's a wavy jet stream to blame.

NCNP / AFP - Getty Images

Science News

Tiny deer-like species spotted for first time in three decades

David J. Phillip / AP file

Environment

The most destructive hurricanes are hitting the U.S. more often

ESO/P. Vernazza et al./MISTRAL algorithm / ONERA/CNRS

Science News

Is this asteroid the littlest planet? Some astronomers think so.