The Benue and Niger Rivers appeared as thin ribbons of dark blue when Terra photographed them on October 20, 2008. They were bloated, raging forces of nature four years later--flooding on the two rivers has displaced 1.3 million people, and killed over 400, since July.
Colorado is now well into its first year as the first state to legalize recreational marijuana. How's it going? James Hamblin visits Aspen.