Ever noticed how one yawn can trigger many? Science reveals how your brain copies others, why yawns spread so easily, and ...

ORLANDO, Fl. – As the days get shorter and the sun lowers in the sky, the intensity of sunlight decreases, signaling to trees that it’s time to prepare for winter. This triggers the leaves to stop ...

Global temperatures rising faster, sea levels increasing rapidly Coral die-off marks first climate tipping point, Amazon and Atlantic current at risk US climate work hit by Trump plans to cut, but ...