http://www.ted.com After he swam the North Pole, Lewis Pugh vowed never to take another cold-water dip. Then, he heard of Mt. Everest’s Lake Imja — a body of water at an altitude of 5,300 meters, entirely created by recent glacial melting — and began a journey that would teach him a radical new way to approach both swimming and think about climate change.... Read More إقرأ المزيد | Share it now!