Mexican methane leak rate 'alarming' for climate change, report says

FILE PHOTO: A fuel burner is seen at Mexico's state-run oil monopoly Pemex platform "Ku Maloob Zaap" in the Northeast Marine Region of Pemex Exploration and Production in the Bay of Campeche April 19, 2013. REUTERS/Victor Ruiz Garcia

MEXICO CITY (Reuters) - Mexico's methane leak rate from oil and gas operations is twice as high as that of the world's top oil producer, the United States, a group of researchers found in a report due to be released this week.

Invisible and odorless but much more harmful than carbon dioxide, climate change scientists consider methane to be a major driver of global warming.