A bladder at a camp in Port-au-Prince holds fresh water. Sanitation and clean water are key to staving off cholera, and public health officials are launching a massive education effort using text messages and radio broadcasts. Christopher Joyce/NPR hide caption

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Rep. Thaddeus McCotter, R-Mich., rocks out on Facebook. facebook.com/thaddeusmccotter hide caption

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This image of what turned out to be the FBI's GPS tracking device was posted online after Yasir Afifi found it under his car. via reddit hide caption

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A programmable LED pumpkin at hacker space HacDC, in Washington, D.C., designed by member David Kaufman. Many Halloween purists prefer to design, rather than buy, high-tech ghouls, goblins and ghosts. Jacob Fenston for NPR hide caption

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UPS, FedEx and Coca-Cola are among the companies using hybrid trucks in their fleets. Here, a hydraulic-hybrid UPS delivery truck is shown in Philadelphia in 2006. Matt Rourke/AP hide caption

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