"Earth Hour is yet another symbol of how climate activists have hijacked the environmental movement," said Tom Harris, executive director of the International Climate Science Coalition (ICSC) which is headquartered in Ottawa, Canada. "Most people do not realize that, when they turn out their lights for sixty minutes on March 31, they are not supporting science-based environmental protection. Participants in Earth Hour are unwittingly helping prop up one of the most threatening scientific hoaxes in history--the idea that carbon dioxide (CO2) emissions from human activities are known to be causing dangerous global warming and other problematic climate change."