New York Times Hardcover Nonfiction Bestsellers April 4, 2021 1. This Is the Fire: What I Say to My Friends About Racism by Don Lemon The CNN host looks at the impact of racism on his life and prescribes ways to address systemic flaws in America. 2. The Code Breaker: Jennifer Doudna, Gene Editing, and the Future of the Human Race by Walter Isaacson How the Nobel Prize winner Jennifer Doudna and her colleagues invented CRISPR, a tool that can edit DNA. 3. Greenlights by Matthew McConaughey The Academy Award-winning actor shares snippets from the diaries he kept over the last 35 years. 4. Caste: The Origins of Our Discontents by Isabel Wilkerson The Pulitzer Prize-winning journalist examines aspects of caste systems across civilizations and reveals a rigid hierarchy in America today. 5. How to Avoid a Climate Disaster: The Solutions We Have and the Breakthroughs We Need by Bill Gates A prescription for what business, governments and individuals can do to work toward zero emissions. 6. Untamed by Glennon Doyle The activist and public speaker describes her journey of listening to her inner voice. 7. A Promised Land by Barack Obama In the first volume of his presidential memoirs, Barack Obama offers personal reflections on his formative years and pivotal moments through his first term. 8. The Sum of Us: What Racism Costs Everyone and How We Can Prosper Together by Heather McGhee The chair of the board of the racial justice organization Color of Change analyzes the impact of racism on the economy. 9. Just As I Am by Cicely Tyson with Michelle Burford The late iconic actress describes how she worked to change perceptions of Black women through her career choices. 10. Think Again: The Power of Knowing What You Don't Know by Adam Grant An examination of the cognitive skills of rethinking and unlearning that could be used to adapt to a rapidly changing world. 11. Uncomfortable Conversations With a Black Man by Emmanuel Acho A look at some questions and concepts needed to address systemic racism. 12. Walk in My Combat Boots: True Stories from America's Bravest Warriors by James Patterson and Matt Eversmann with Chris Mooney A collection of interviews with troops who fought overseas. 13. Hunt, Gather, Parent: What Ancient Cultures Can Teach Us About the Lost Art of Raising Happy, Helpful Little Humans by Michaeleen Doucleff A look at different approaches to rearing children from various parts of the planet. 14. Nöthin' but a Good Time: The Uncensored History of the '80s Hard Rock Explosion by Tom Beaujour and Richard Bienstock An oral history of hard rock and heavy metal music in the 1980s. 15. Lady Bird Johnson: Hiding in Plain Sight by Julia Sweig A look at the policy initiatives and the leadership style of the first lady during her time in the East Wing. © 2021  All rights reserved by New York Times Syndication Sales Corp. This material may not be published, broadcast or redistributed in any manner.   A version of this list appears in the April 4, 2021 issue of The New York Times Book Review. Rankings reflect sales for the week ending March 20, 2021. Patchogue-Medford Library 54-60 East Main Street Patchogue, New York 11772 (631) 654-4700 www.pmlib.org/