Some 76 countries and territories use left-hand traffic, and the practice is believed to have originated in ancient Rome to help defend against enemy attacks. Following is a transcript of the video.

The ancient sword likely did not belong to the famous ... the Hittite ranks with about 20,000 soldiers. But what made the fight famous was that it was one of the world's largest chariot battles ...

KASHIHARA, Nara Prefecture--An iron sword that at more than 2 meters long ranks as the largest intact ancient blade ever discovered in Japan is heavily oxidized after being buried in soil for ...