[allAfrica] Imagine this: You're walking down the street, breathing in the fresh air. But what you don't see is the invisible cloud of toxic pollutants that's following you. This cloud is made up of the exhaust fumes from cars, trucks, buses, and other vehicles that run on fossil fuels. Using fossil fuels for energy takes a devastating toll on humanity and the environment, from air and water pollution, to the existential threat of the climate crisis.