Written for the millions of science teachers, students and the public who want evidence of their views. Society must make important choices in health and medicine, the environment, energy sources, the courts and in risk and safety. These issues and many other problems facing us require knowledge of science for their solution. Polls show that nearly half of the US population believes the myths, superstition and paranormal delivered by TV and the press. Despite the great advances of science in the 20th century, pseudo-science and anti-science are still around, even growing in some of the greatest universities and institutions in the land.