I think you're mixing up stuff. Here is what what said: - Headline: "Los Angeles hid a methane leak for a year" - "Power revealed last month that its power pl

I think you're mixing up stuff. Here is what what said: - Headline: "Los Angeles hid a methane leak for a year" - "Power revealed last month that its power plant had been leaking methane gas for at least three years" - "The plant’s compressor units had been leaking gas “for the last couple years,” one staffer said. The utility had a plan in place to fix the compressors later in the year but" - "especially because utility staff said they discovered the leak in August 2019, a full year earlier. Staffers said they didn’t notify the public because they didn’t believe anyone was at risk" So, it has been leaking for years. But they only discovered it a year ago. They cannot hide what they do not know, hence the headline. Although if I was the editor, I'd have chosen "Power plant leaked methane for years" rather than "Someone hid it for a year", but I guess that's the angle they've chosen (or the former was already known, so not "news").