Part One

School of Physics and Chemistry

42 Rue Lhomond, Paris

In the beginning was the Word, and the Word was … hydrogen.

—Diane Ackerman, The Planets: A Cosmic Pastoral

To extract uranium from pitchblende, there are at that time factories.

To extract radium from it, there is a woman in a hangar.

—Lydia Davis, “Marie Curie, So Honorable Woman,” from Samuel Johnson Is Indignant