In 2017, the US announced its intent to return to the Moon for the first time in a half-century. NASA and its international partners in the Artemis program hope to land a crewed lunar mission in 2024, but some experts have cast their doubts. So how did America achieve such a feat in the '60s? And why haven't we been back since the Nixon era? My guest today, Charles Fishman, answers these questions and more.

Charles is a journalist and author of One Giant Leap: The Impossible Mission that Flew Us to the Moon as well as The Big Thirst: The Secret Life and Turbulent Future of Water, among other works.