Is everything we know about substance abuse and addiction wrong? It just might be.

What causes addiction? Easy, right? Drugs cause addiction. But maybe it is not that simple. With Maine's heroin crisis spiraling out of control, a new take on the reality of addiction and a fresh perspective might be just what we need.

In Johann Hari’s new book about drugs and addiction, he takes a hard look at what we think we know about addiction, and how our assumptions might be wrong. This video sums up the author's main points: Addiction to drugs might not be something that just "happens" to people... there might be a lot more science behind it than we think.

Johann Hari is a British journalist. He has written for many of the world’s leading newspapers and magazines, including the New York Times, Le Monde, the Guardian, the Los Angeles Times, the New Republic, the Nation, Slate, El Mundo, andthe Sydney Morning Herald.He was a lead op-ed columnist for the Independent, one of Britain’s leading newspapers, for nine years.