I'm a freelance journalist whose work has appeared in Time, Life, Esquire, Rolling Stone, Mother Jones, Aeon, Discover (where I'm a contributing editor), and many other publications. My reporting focuses on science, medicine, the environment, and social change, as well as stories of ordinary humans overcoming enormous obstacles to accomplish astonishing things. My new book, Mapping the Darkness: The Visionary Scientists Who Unlocked the Mysteries of Sleep, will be published by Hachette in October 2023.