Jennifer Doudna thought she had won the race. She thought she had beaten out all scientific competitors when she and her co-author had shocked the world with their groundbreaking technology for gene editing. But turned out, the race had just gotten fiercer. 

Walter Isaacson sits down with Evan to talk about how one of the most cutthroat scientific competitions in biotech got started around one goal — making CRISPR work for humans, and getting the credit for it.