Blowing Up the Panama Canal

The Panama Canal, a human-created waterway between the Pacific and Atlantic Oceans, is the last century's greatest work of geoengineering. And it continues to evolve. Just a few months ago, workers began setting off explosives like those you see here to widen the canal and allow oil supertankers to get through. Want… » 2/12/08 7:00am 2/12/08 7:00am