The Associated Press has polled Americans about their scientific beliefs:
Just 4 percent doubt that smoking causes cancer, 6 percent question whether mental illness is a medical condition that affects the brain and 8 percent are skeptical there's a genetic code inside our cells. More — 15 percent — have doubts about the safety and efficacy of childhood vaccines. About 4 in 10 say they are not too confident or outright disbelieve that the earth is warming, mostly a result of man-made heat-trapping gases, that the Earth is 4.5 billion years old or that life on Earth evolved through a process of natural selection, though most were at least somewhat confident in each of those concepts. But a narrow majority — 51 percent — questions the Big Bang theory. Those results depress and upset some of America's top scientists, including several Nobel Prize winners, who vouched for the science in the statements tested, calling them settled scientific facts.
Unsurprisingly, Republicans were more likely to doubt science.
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