Letter to the editor Share this:Click to share on Facebook (Opens in new window)Click to share on Twitter (Opens in new window) Contact the authorby Colac Herald Contributor January 28, 2022 A reader answers questions about carbon dioxide and methane. Unlock full access to Colac Herald - Subscribe today! Subscribe Now Share this:Click to share on Facebook (Opens in new window)Click to share on Twitter (Opens in new window) Tags: Letters, Letters to the editor