In April, three eco-adventurers left Plymouth, England, on a solar- and man-powered boat to make a 5,000-mile carbon emission-free trip to Greenland. Mother Nature didn't cooperate, however, as the three encountered severe weather after only 12 days. The boat capsized three times, and, the BBC reports, "In one incident [one traveler, Ben] Stoddart hit his head and the wind generator and solar panels were ripped from the yacht." In the end, the three had to be rescued, which is where the story gets even better. They sent a mayday to Falmouth coastguards, who coordinated the rescue with the Overseas Yellowstone -- an oil tanker . Nothing like a little irony to put things in perspective.