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.
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