Greenpeace Co-Founder: No Proof CO₂ Causes Warming—Without It, Earth Would Be Dead

Dr. Patrick Moore, co-founder of Greenpeace: "There is no definitive scientific proof that CO₂ is responsible for any of the slight warming of the global climate that has occurred during the last 300 years."

"But there is certainty beyond a reasonable doubt that CO₂ is the building block for all life on Earth, and that without its presence in the global atmosphere… this would be a dead planet."