For Aleksander Doba, pitting himself against the wide-open sea \u2014 storms, sunstroke, monotony, hunger and loneliness \u2014 was a way to feel alive in old age. Today, listen to the story of a man who paddled toward the existential crisis that is life and crossed the Atlantic alone in a kayak. Three times.\n\nMr. Doba died on Feb. 22 on the summit of Mount Kilimanjaro in Tanzania, Africa. He was 74.