Electric cars are clean, but their batteries can be dirty

Electric car makers are manufacturing lithium-ion batteries in places with some of the most polluting grids in the world.
Beneath the hoods of millions of the clean electric cars rolling onto the world’s roads in the next few years will be a dirty battery.

Every major carmaker has plans for electric vehicles to cut greenhouse gas emissions, yet their manufacturers are, by and large, making lithium-ion batteries in places with some of the most polluting grids in the world.