Venezuelan President Hugo Chavez appears at an event in Caracas, Venezuela, on Thursday, after returning from radiation therapy in Cuba. Ariana Cubillos/AP hide caption

itoggle caption Ariana Cubillos/AP

Pope Benedict meets with Fidel Castro in Havana on Wednesday as he wraps up his three-day visit to Cuba. A large crowd turned out for the Mass, though the pope did not meet with dissidents. Osservatore Romano/AP hide caption

itoggle caption Osservatore Romano/AP

A young girl bathes in an irrigation canal. The canal and nearby river are the primary sources of water for most people who live in the country around Saint-Marc, Haiti. John W. Poole/NPR hide caption

itoggle caption John W. Poole/NPR

A man rides his bicycle past a billboard welcoming Pope Benedict XVI, just days before his arrival, in Havana, Cuba. Pope Benedict's trip to Latin America includes Mexico and Cuba. Javier Galeano/AP hide caption

itoggle caption Javier Galeano/AP

Parishioners stand outside a Catholic church in a poor Santiago suburb on Saturday in Cuba. Pope Benedict XVI is in Mexico but will head to Cuba next for a three-day visit. Spencer Platt/Getty Images hide caption

itoggle caption Spencer Platt/Getty Images

Thousands of people try to cross the desert from Mexico into the United States every year. Michael Wells hide caption

itoggle caption Michael Wells

Pope Benedict XVI listens to a speech during his welcome ceremony in Mexico. Gregorio Borgia/AP hide caption

itoggle caption Gregorio Borgia/AP

Connie Marrero, age 100, was a major league all-star who struck out the likes of Joe DiMaggio and Mickey Mantle. He returned to his native Cuba after his career ended. He's now the oldest living ex-major leaguer and is finally getting a pension payment. He's shown here at his apartment in Havana. Nick Miroff/NPR hide caption

itoggle caption Nick Miroff/NPR

Pope Benedict XVI is expected to speak out against drug violence during his visit to Mexico, which begins Friday. Here, an actor is shown in front of a poster announcing the pope's visit Wednesday in the Mexican city of Leon, Guanajuato state. Hector Guerrero/AFP/Getty Images hide caption

itoggle caption Hector Guerrero/AFP/Getty Images