More than a half a billion people in Sub-Saharan Africa don't have access to electricity. But now, a non-profit organization that has had success with its wind-up radio is using the same technology to turn on the lights. The World's Clark Boyd reports.
A century ago, the building of the Panama Canal and construction of Lake Gatun was met with great fanfare. It captured the attention of the world, showing that the seemingly impossible was indeed possible.
Mexico's Huichol people aren't on the power grid, but LED technology may bring them light. Designers and architects are distributing a textile that absorbs the sun's rays during the day and gives off light at night. The World's Jason Margolis has more.