Gemstones like precious opal are beautiful to look at and deceivingly complex. As you look at such gems from different angles ...

Scientists have long believed that foam behaves like glass, with bubbles locked into place. New simulations reveal that ...

U.S. Customs and Border Protection (CBP) agents stand guard during a protest outside the Whipple Federal Building, more than a week after a U.S. Immigration and Customs Enforcement (ICE) agent fatally ...