Space historian William Sheehan and planetary scientist Jim Bell have written a fascinating history of humankind’s at least 5,000-year relationship with the Red Planet. “Discovering Mars” is filled with anecdotes about the people who have revealed Mars. The chronicle includes Mars helicopter Ingenuity’s flights and then looks to the future of exploration. Someone will win the book in Bruce Betts’ latest What’s Up space trivia contest. Discover more at https://www.planetary.org/planetary-radio/2021-discovering-mars-book-bell-sheehan