Exploring Africa in sneakers

November 22, 2020 5:00 AMThere is no limit to the size of our dreams and no known frontier to human ambition. For some this is a bumper sticker and for others a prayer to live by. This year a 72-year-old carpenter rowed across the Atlantic in a boat built in his garden. Two years ago, Xia Boyu, then 69, summited Everest, the same mountain which claimed his feet through frostbite in 1975.