As Brazil gets ready to host the Olympics and World Cup, the country won't just be dealing with threats from civil unrest. There's also the threat of terrorism. The World's Jason Margolis has more on that angle from Rio de Janeiro.
Peru has one of the most varied food cultures in the world. Not long ago, many of the country's indigenous crops were falling out of favor. Reporter Cynthia Graber recently met with two men working to reverse that trend in very different ways.
Colombia's second largest city was once dominated by the drug cartel of Pablo Escobar. Crime remains high. Which is why several groups in the city are determined to provide peaceful alternatives for young people through art and music.
After an eight month journey into space, NASA's most ambitious rover robot is due to land on Mars Sunday night. Anchor Aaron Schachter talks to Mars Science Laboratory Project Chief Engineer Miguel San Martin.