Science

Follow PBS NewsHour’s complete coverage of Science and Technology stories.

Thursday on the NewsHour, a state of emergency is declared in three states as Hurricane Matthew barrels toward the U.S. Also: The presidential candidates’ starkly different views on guns, why universities pay millions to host the debates, a possible “turning…

Oct 05

If you have a big brain, you can credit yawning for promoting brain growth and activity, the researchers found. And if you have a small brain, you can blame the fact that you don’t yawn long enough.