In episode 2 of season 7, we interview Dr. William Hurlbut, a Stanford medical doctor and bioethicist, about the pros and cons of CRISPR-Cas9, a targeted DNA editing tool. He also tells us about his project with CRISPR pioneer and co-discoverer Jennifer Doudna to educate the public about CRISPR. To learn more about CRISPR, check out our archives (s4e8, s4e1, s1e8) as well as this Radiolab episode.