A man leaves an earthquake-destroyed building after police threw tear gas in Concepcion, Chile. President Michelle Bachelet ordered troops to help deliver food, water and blankets and clear rubble from roads. Natacha Pisarenko/AP hide caption

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An Iraqi policeman walks past campaign posters of Ibrahim al-Jaafari, right, of the Shiite Iraqi National Alliance, and Iraqi Human Rights Minister Wijdan Salim, left, of Iraqi Prime Minister Nouri al-Maliki's State of Law Coalition, at night in Baghdad, Iraq, March 1, 2010. Iraqis head to the polls on March 7 for an important national election. Hadi Mizban/AP hide caption

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A man holding a child passes by a damaged building in Valparaiso, Chile on February 28, 2010. Felipe Gamboa/AFP/Getty Images hide caption

itoggle caption Felipe Gamboa/AFP/Getty Images