EditorialA storage facility in Wilhelmshaven, Germany, for liquid bulk products, including liquefied petroleum gas, a byproduct of oil, on July 12, 2022. (Patrick Junker/The New York Times)
EditorialSamples of, from left, Portland cement; slag, a byproduct of steel manufacturing; and fly ash, a byproduct of coal, at the U.S. Concrete lab in San Jose, Calif., on July 31, 2020. (Jason Henry/The New York Times)