That would be true if methane had been higher than we thought all along. That's not the case, since it's not hard to measure the methane level. What's happenin

That would be true if methane had been higher than we thought all along. That's not the case, since it's not hard to measure the methane level. What's happening is that the methane level is increasing faster than people expected. It could be from permafrost melting, or leaks from natural gas infrastructure, or various other things.