A horse-cart driver readies his horse before a days work in Dakar on May 5, 2021. - Horses are ubiquitous in the booming West African city of 3.5 million people, where carts weave through traffic-clogged streets and squeeze down narrow sandy alleyways. Drivers carry goods and people at a cheap rate, and increasingly, also collect garbage in neighbourhoods unserved by rubbish trucks. (Photo by JOHN WESSELS / AFP)