You must watch this video in which Lewis Pugh talks about his record-breaking swim across the North Pole. He braved the icy waters (in a Speedo) to highlight the melting icecap. Watch for the astonishing footage and his commentary about the childhood dream, purpose of this swim, and the physical and mental preparation:
Makes you wonder about the power of the human will. Question is, what are we going to do with that power?