The World's Alex Gallafent traces the history of the Pentagon's attempts to build a multilingual military. The problem is that different languages have been needed for different times and places, and the military has not always kept up with those needs.
Americans marked the 150th anniversary of the start of the Civil War today, but according to Brian DeLay, a teacher of history at the University of California, Berkeley, the rest of the world was hardly at peace, either.
Last Friday's earthquake was the largest on record to hit Japan. But there were huge quakes and tsunamis before records were kept. Anchor Marco Werman explores the history of quakes and tsunamis with Brian Atwater of the US Geological Survey.
John Otis reports on controversial plans for a massive mine in the Colombian Andes. The proposal marks a stark shift for a region long beset by violence and neglect. But the promised jobs and come with fear of water pollution and environmental damage.