The Panama Canal, the highlight of our last day, was a study in contradictions after the full immersion in the natural world of Darién. In the context of the Web of Life, I think beyond this place and this moment, where 3,000 people will visit with their cameras and iPhones and take selfies in front of the moving machines. I think of the 30,000 people who died in the creation of this canal. I think of the mountains moved, the thousands of acres of forests flooded and wetlands drained, and the millions of gallons of fresh water being flushed into the sea with the movement of every ship.