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 ...

Indonesia’s Kawah Ijen volcano appears to glow electric blue at night, but the colour does not come from lava. Instead, ...