Johnny Townsend: If climate change is real, but not caused by human activity, don’t we still need to address It?

(Scott Sommerdorf | Tribune file photo) Michael Dowd, aka "Reverend Reality" sings as environmental activist demonstrators blockaded this Exxon station in Murray with red lines meant to symbolize Exxon's closure, which the activists demand as retribution for the company's alleged role in denying climate change, Saturday, December 12, 2015.