Carmakers have known for decades that battery recycling was poisoning people abroad. Nigeria’s crackdown is an effort to catalog the damage.

© Victor Adewale for The New York Times

China’s experiments in clean energy can feel like living in the future. Even when things don’t quite work.

Ford Motor said the costs came from its decision to make fewer electric vehicles than it had planned and more hybrids that use both gasoline engines and batteries.

Desperate to catch up with Chinese automakers, Ford is redesigning its fleet with a Silicon Valley-style team. Is it too late?

An early grid battery was installed in the Atacama Desert in Chile 15 years ago. Now, as prices have tumbled, they are increasingly being used around the world.