In 1992, a young man headed into the Alaskan wilderness seeking a new way of life and perhaps an escape from the modern world. Four months later, emaciated and helpless, he died. This short, fatal experiment with simple living was exhaustively explored by Jon Krakauer in his book, Into The Wild
. But one core mystery remained: Was the journey a slow-motion suicide mission? Or was his death an accident? Jon Krakauer had a theory: unintentional poisoning. Now, he thinks he has proof. He tells Audie Cornish about the new evidence.