December 21 marks the shortest day ï¿½ and the longest night of the year in the northern hemisphere. This year there was an extra treat on the solstice: A total lunar eclipse. Our question today: Do you know the distance to the moon?
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.
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.
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.