Scientists at the Large Hadron Collider near Geneva celebrate after the particle accelerator started smashing protons at record energies earlier today. Fabrice Coffrini/AFP/Getty Images hide caption

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Workers rest in front of the cooling towers of a coal-fired power plant in Dadong, China. Such plants are a major contributor to carbon dioxide emissions. Andy Wong/AP hide caption

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The earthquake that rocked Chile was powerful enough to damage a highway near Santiago — and even to shift the location of the Earth's rotation pole. Carlos Espinoza/AP hide caption

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15 minutes outside of Port-au-Prince, along the shoulder of National Road 2, a sign from the Department of Tourism instructs people not to throw garbage. But this site has now become a makeshift dump, where rubble from the Jan. 12 earthquake is piled as far as the eye can see. Richard Harris/NPR hide caption

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A 60-mile-long iceberg known as B9B, right, crashes into the Mertz Glacier Tongue, left, in the Australian Antarctic Territory on Saturday. The collision created a new 48-mile-long iceberg. AP Photo/Commonwealth of Australia hide caption

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