Dean Spears & Michael Geruso on Why We Need More People

Dean Spears and Michael Geruso are economists, demographers, and associate professors at the University of Texas at Austin. Their book After the Spike: Population, Progress, and the Case for People is out on July 8, 2025.

In this week’s conversation, Yascha Mounk, Dean Spears and Michael Geruso explore whether a higher population really impacts climate change, why more people on the planet means more geniuses, and how we can avoid depopulation.

Podcast production by Jack Shields and Leonora Barclay.

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