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

itoggle caption Christopher Joyce/NPR

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

itoggle caption facebook.com/thaddeusmccotter

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

itoggle caption via reddit

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

itoggle caption Jacob Fenston for NPR

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

itoggle caption Matt Rourke/AP