EditorialGas-powered burners in the production of hydraulic blocks and slide valves at Hawe Hydraulics in Kaufbeuren, Germany, on June 21, 2023. (Ingmar Nolting/The New York Times)
EditorialGas-powered burners in the production of hydraulic blocks and slide valves at Hawe Hydraulics in Kaufbeuren, Germany, on June 21, 2023. (Ingmar Nolting/The New York Times)
EditorialGas-powered burners in the production of hydraulic blocks and slide valves at Hawe Hydraulics in Kaufbeuren, Germany, on June 21, 2023. (Ingmar Nolting/The New York Times)
EditorialGas-powered burners in the production of hydraulic blocks and slide valves at Hawe Hydraulics in Kaufbeuren, Germany, on June 21, 2023. (Ingmar Nolting/The New York Times)
EditorialA crew tests the burners of the hot air ballon before taking to the skies in Enumclaw, Wash. on July 22, 2021. (Ruth Fremson/The New York Times)