Here's a vintage piece from Canada's National Post, a long non sequitur that presumes to prove that CO2 is not threat - by calling it benign and by suggesting that there really isn't that much of it around.
Global warming is starting to have a significant impact on Australian marine life, driving fish and seabirds south and threatening coral reefs. Already, nesting sea turtles, yellow-fin tuna, dugongs and stinging jellyfish are examples of marine life moving south as seas warm, said the report by the government-backed Commonwealth Scientific and Industrial Research Organisation.
Democracy is utterly dependent upon an electorate that is accurately informed. In promoting climate change denial (and often denying their responsibility for doing so) industry has done more than endanger the environment. It has undermined democracy.
There is a vast difference between putting forth a point of view, honestly held, and intentionally sowing the seeds of confusion. Free speech does not include the right to deceive. Deception is not a point of view. And the right to disagree does not include a right to intentionally subvert the public awareness.