The CRISPR gene editing system is one of the coolest and perhaps most consequential scientific breakthroughs of the last decade. I’m familiar with it because of my work at the foundation—we’re funding a number of projects that use the technology—but I still learned a lot from this comprehensive and accessible book about its discovery by Nobel Prize-winning biochemist Jennifer Doudna and her colleagues. Isaacson does a good job highlighting the most important ethical questions around gene editing.