California methane leak was biggest ever in U.S., scientists say
 

California methane leak was biggest ever in U.S., scientists say
LOS ANGELES (Reuters) - The months-long natural gas leak that forced thousands of Los Angeles residents from their homes ranks as the largest k**wn accidental methane release in U.S. history, equal to the annual greenhouse gas emissions of nearly 600,000 cars, scientists reported on Thursday.
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