Sen. Charles Schumer (D-NY), left, speaks with Sen. Tom Coburn (R-OK). "We believe in strenuous discourse," Schumer told NBC News. Evan Vucci/AP hide caption

itoggle caption Evan Vucci/AP

Solar panels like this modified ZeroBase Regenerator can provide power for more than 17 computers and 15 lighting units, according to Marines who tested the equipment in Afghanistan. Gunnery Sgt. William Price/USMC hide caption

itoggle caption Gunnery Sgt. William Price/USMC

Hamilton Holmes and Charlayne Hunter of Atlanta examine diplomas awarded during the University of Georgia's 160th commencement in Athens, Georgia, June 3, 1963. They are the first blacks to attend the nation's oldest land grant college. AP hide caption

itoggle caption AP