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.
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