Image RemovedWhat do you think are the biggest solvable problems facing humanity? Justice and inequality? Violence and war? Climate change and pollution? Today we’re going to focus on one that I believe underlies all of those: Population.

The last book from today’s guest, Alan Weisman, was thought-provoking, award-winning, and best-selling. The World Without Us, which was made into a powerful documentary, imagined what would happen to planet earth if humans disappeared. Our massive infrastructure would collapse and vanish without human presence, and nature would swiftly begin to heal without our daily pressures.
 
But, Weisman, would rather Imagine a successful world with us, and that led to his newest book, Countdown: Our Last, Best Hope For a Future on Earth. For this one, he traveled to 21 countries asking politicians, scientists, family planning specialists, doctors, and religious leaders, crucial questions about how we can successfully deal with the size of human population.