Djo Drigbé has one big vision: To see the capital of Ivory Coast clean. He is unemployed and earns no money from collecting garbage. Instead, he supports his family through donations.

Twenty years since the September 11 attacks, hundreds of undocumented workers who joined the clean-up efforts at Ground Zero are suffering from health issues caused by inhaling contaminated dust, with many still fighting to obtain US citizenship.

Moving up and down through the aisles of northeast America’s Stop and Shop supermarkets is an autonomous robot named Marty. In these stores he has one job: to inspect the floor and look for hazards and spills.

A Dutch court in January ruled that Shell had polluted the Niger Delta and ordered the energy giant to pay compensation. But many are now questioning whether it is enough to put right the misery suffered by the people.

The Lagos State Government, through the Lagos State Waste Management Authority (LAWMA), has hundreds of men and women employed as street sweepers with the duty of cleaning up the state’s roads and highways. On Thursday, two of those sweepers were killed in a hit-and-run incident. Sadly, it is not the first time.

South African President Cyril Ramaphosa says recent violent unrest and looting, which claimed more than 200 lives, united the country as well, as he visits cleanup and rebuilding efforts in Soweto township in Johannesburg.

The abandoned National Stadium, Lagos, is finally getting attention decades after neglect and original design altered. Demolition trucks have been working inside the complex for two weeks, pulling down illegal structures that once adorned what used to be one of the best sports facilities in Africa.