"I don't know if I'd say dry ice is essential to heavy metal shows but, yeah, it's important."Carlos MacDonald
"I am sick of all of my favorite pollutants getting a bad rap. Please don't let carbon dioxide go the way of cyanide, sulfuric acid, and galvanic sludge."Sarah Mallory
Solar Panel Installer
"Lying in advertising. Is there anything these people won't do?"Jonah Jacobson
New ads produced by the US-based Competitive Enterprise Institute defend carbon dioxide emissions as a byproduct essential to our way of life. What do you think?