The last thing John Kanzius thought he'd ever do was try to cure cancer. A former radio and television executive from Pennsylvania, he came to Florida to enjoy his retirement. I have no business being in the cancer business. It's not something that a layman like me should be in, it should be left to doctors and research people," he told [CBS] correspondent Lesley Stahl. It was the worst kind of luck that gave Kanzius the idea to use radio waves to kill cancer cells: six years ago, he was diagnosed with terminal leukemia and since then has undergone 36 rounds of toxic chemotherapy. But it wasn't his own condition that motivated him, it was looking into the hollow eyes of sick children on the cancer ward at M.D. Anderson Cancer Center in Houston. "I saw the smiles of youth and saw their spirits were broken. And you could see that they were ... asking, 'Why can't they do something for me?'" Kanzius told Stahl. "And I said, 'There's got to be a better way to treat cancer.'" It was during one of those sleepless nights that the light bulb went off. When he was young, Kanzius was one of those kids who built radios from scratch, so he knew the hidden power of radio waves. Sick from chemo, he got out of bed, went to the kitchen, and started to build a radio wave machine. "Started looking in the cupboard and I saw pie pans and I said, 'These are perfect. I can modify these,'" he recalled. His wife Marianne woke up that night to a lot of banging and clamoring. "I was concerned truthfully that he had lost it," she told Stahl. "She felt sorry for me," Kanzius added. "I did," Marianne Kanzius acknowledged. "And I had mentioned to him, 'Honey, the doctors can't-you know, find an answer to cancer. How can you think that you can?'" That's what 60 Minutes wanted to know, so Stahl went to his garage laboratory to find out.