Current carbon dioxide levels last seen 14 million years ago

The last time carbon dioxide in the atmosphere consistently matched today's human-driven levels was 14 million years ago, according to a large new study Thursday that paints a grim picture of where Earth's climate is headed.

Rethinking boundaries in a warming world

These days, migration is always in the news. Around the world, people are displaced by war, political oppression, poverty and violence; every day, families risk their lives in search of better environments.

Test of police implicit bias training shows modest improvements

A two-part training designed to help police officers recognize their implicit bias, revealed some behavior improvement and lowered citizen discrimination complaints in a controlled study. While a small study involving one ...

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