Ed Berry, physicist and climate scientist: Fear is the greatest motivator. When humans accept a belief because of fear, sometimes they cannot recover. They can’t comprehend evidence that their fear is not warranted. Fear supersedes logic. Witch doctors, tribal leaders, and “fire and brimstone” preachers learned that a long time ago. To control the people, instill fear in the people. Today, we have two generations of people who have grown up with the belief that human carbon dioxide emissions cause serious climate change. See Ed Berry's very clear text explanations and John Shanahan's photos of nature around the world documenting how healthy Earth's climate has been for the last hundred years. Catastrophic man-made global warming resides in the determined mines of the alarmists.