TULSA, Okla., Sept. 22, 2021 /PRNewswire/ -- ONEOK, Inc. (NYSE: OKE) today announced a companywide greenhouse gas (GHG) emission reduction target. The company expects to achieve an absolute 30% reduction, or 2.2 million metric tons (MMT), of its combined Scope 1 and Scope 2 emissions by 2030, compared with 2019 base-year levels.