Walter Isaacson’s biography of Jennifer Doudna, a leading researcher in CRISPR gene editing. The excerpts discuss Doudna’s life, her work on CRISPR, the competition she faced from other researchers, and the ethical considerations of CRISPR gene editing. The text focuses on Doudna’s personal journey from her early childhood interests in science to her role in the development of a revolutionary gene editing tool. It also explores the ethical implications of gene editing and its potential impact on the future of humanity.