I was on CBS’s Sunday Morning on Sunday the 21st. Here’s an excerpt from the conversation:

“There was, by the end, a maniacal quality to him,” said Grann. “And I think with obsession, there are kind of two qualities about it: there is the fruits of obsession, which can lead to wonderful discoveries - Fawcett made many interesting discoveries - but there could also be a lethal quality to obsession, and in this case, there really was.”

And you can read the rest at CBS