How much does global population decline matter? (with Dean Spears)

Jul 23, 2025 1h 7m 11 insights Episode Page ↗
Dean Spears, an economic demographer at the University of Texas at Austin, discusses global depopulation, low birth rates, and the urgent need for global population strategies. He explores the economic and societal implications of a shrinking population and challenges common misconceptions about its causes and solutions.
Actionable Insights

1. Prioritize Decarbonization for Climate

Do not rely on global depopulation as a solution for climate change because it is too slow, operating on generational timescales rather than the urgent yearly changes needed. Instead, focus efforts on decarbonization to address environmental challenges effectively.

2. Dads Must Share Parenting

If society desires a future with more children, dads and potential dads must significantly increase their share of parenting work, including tasks like cleaning, nighttime care, cooking, and logistical planning. This helps spread the burdens of child-rearing beyond pregnancy, making it more feasible for parents to choose larger families.

3. Improve Parenting Support

To achieve a stabilized future where people freely choose to have an average of two children, advocate for more support, flexibility, and funding for parenting. This approach ensures a fair and equitable future for both women and men without coercing choices.

4. Engage in Low Birth Rate Conversation

Participate in discussions about low birth rates from a liberal, progressive perspective to prevent illiberal forces from dominating the narrative and shaping societal responses. This ensures that concerns about reproductive freedom and women’s progress are integrated into solutions.

5. Seek Consensus on Stabilization

Recognize that if a stabilized future population (at any level) is desired over indefinite depopulation, then global birth rates must eventually return to an average of two children per two adults and stay there. Work towards building consensus on this goal.

6. Adapt to Aging Populations

Recognize that economic adjustments will be necessary to handle an aging population, as the U.S. average age has increased and is projected to continue rising. Embrace intergenerational transfers as a positive aspect of society, ensuring continued benefits of living in a world with other people.

7. Focus on Average Birth Rate

Don’t let the debate on childlessness distract from the fact that a decline in the average number of children among parents also causes depopulation. This broader perspective helps understand the true drivers of population decline.

8. Distinguish Global from Local

When discussing population issues, differentiate global depopulation from local overpopulation or nationalistic concerns, as the latter can be driven by “awful stuff” and migration can address local imbalances. Focusing on global trends avoids these problematic distractions.

9. Financial Incentives Are Insufficient

Understand that policies offering money or subsidies for children, even significant social spending or tax credits, do not substantially increase overall birth rates. Decisions about having children are deeply personal and not easily swayed by financial incentives alone.

10. Artificial Wombs Aren’t a Silver Bullet

While technologies like artificial wombs could alleviate the physical pains and risks of pregnancy, they are unlikely to significantly increase birth rates alone. The many years of costs and efforts required for child-rearing after birth remain a major factor.

11. Invite Others to Population Discussion

If you are convinced or curious about the importance of global population strategies, actively invite more people into the conversation. This helps retire outdated overpopulation tropes and build consensus for a forward-looking approach to population.