Europe’s plan to phase out combustion-engine vehicles has put the region at the forefront of climate protection. Yet without progress cleaning up poorer nations’ roads, it won’t be enough to keep global warming below dangerous levels.
Take Nairobi, for example. The Kenyan capital’s vehicle fleet doubles every eight years and its roughly 4.5 million inhabitants rely on minibus taxis called Matatus to get around. While they’re cheap, they tend to be older and often run on dirty diesel.
While virtually all of the world’s population growth by 2050 is forecast to take place in developing countries, thousands of cities in Africa, Asia