EditorialGas separators in the production of heat pumps at Vaillant’s factory in Remscheid, Germany, Sept. 16, 2022. (Patrick Junker/The New York Times)
EditorialGas separators in the production of heat pumps at Vaillant’s factory in Remscheid, Germany, Sept. 16, 2022. (Patrick Junker/The New York Times)
EditorialA conveyor and robotic arms handle ceramic separators for electric vehicle batteries at QuantumScape in San Jose, Calif., on June 15, 2022. (Jason Henry/The New York Times)