The Aliso Canyon natural gas well blowout, first reported on Oct. 23, 2015, released over 100,000 tons of the powerful greenhouse gas methane before the well was sealed on Feb. 11 The results confirm that Aliso Canyon is the largest methane leak in U.S. history

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The Aliso Canyon natural gas well blowout, first reported on Oct. 23, 2015, released over 100,000 tons of the powerful greenhouse gas methane before the well was sealed on Feb. 11 The results confirm that Aliso Canyon is the largest methane leak in U.S. history