By Michael Smolens A past leader of the Sierra Club recently acknowledged he was too late in realizing that curbing methane emissions should have been a priority in combating climate change. In Europe, leaders who once led the charge against global warming are rolling back rules to address it, including their focus on methane. For Rep. Scott Peters, the former is bittersweet, the latter disappointing. Of course, all of that is overshadowed by President Donald Trump’s policies cutting fundin...