Science denial is not new, but researchers have learned a lot about it. Here's why it exists, how everyone is susceptible to it in one way or another and steps to take to overcome it.

Few white evangelicals in the U.S. say they believe in human-made climate change. This strand of science denial seems to have as much to do with conservative politics as the Bible's teachings.

Whether in situations relating to scientific consensus, economic history or current political events, denialism has its roots in what psychologists call 'motivated reasoning.'