One of the lovely things about the mousse, according to Dorie Greenspan, is its versatility: It goes as well with maple syrup as with peanut brittle — or nothing at all. Mary Dodd/Courtesy of Dorie Greenspan hide caption

Climbing robots, modeled after termites, can be programmed to work together to build tailor-made structures. [Image courtesy of Eliza Grinnell, Harvard School of Engineering and Applied Sciences hide caption

Priscilla Smithers and her four children have arranged chairs around a few air mattresses to create a space for themselves, after fleeing their home. Ari Shapiro/NPR hide caption

More than a month after the Charleston, W.V., water supply was contaminated, Nakeysha Bennett will only feed her 3-week-old Eli formula mixed with bottled water. "It drives me crazy that I can't just use regular water out my sink," she says. Brakkton Booker/NPR hide caption

TV producer Colleen Bell, shown here in a 2013 photo, was a big donor for President Obama before she was nominated to become ambassador to Hungary. Obama has chosen more political appointees than his predecessors. Handout/Getty Images hide caption

Hannah Rood, 3, receives an H1N1 vaccine at a clinic in San Pablo, California, during the 2009 swine flu epidemic. Justin Sullivan/Getty Images hide caption

American Idol winner Phillip Phillips, whose song, "Gone, Gone, Gone," went to No. 24 on the Billboard Hot 100. Each time it's played in public, the song's writers get a royalty, which is tracked and collected by ASCAP. Bigger hits usually translate into bigger checks. Buda Mendes/Getty Images hide caption

Jason Brown skated to Prince during his short program Thursday. Vadim Ghirda/AP hide caption