The Bill & Melinda Gates Foundation’s “Impatient Optimists” blog continues its four-part series in which U.K. broadcaster and ex-Paralympian Ade Adepitan, a polio survivor, reflects on his recent trip “back to his birth country of Nigeria to see why kids in his country were still getting polio.” In the second post, he talks about his experience “[g]oing back to Nigeria to learn about polio” (8/20). In the third post, Adepitan highlights his time in Northern Nigeria, where he spent time with a family in the city of Sokoto (8/21). And in the final post, he talks about taking action against the disease (8/23).