After the Spike: The Risks of Global Depopulation and the Case for People

An eye-opening exploration of humanity s unprecedented path to global depopulation and why it's in everyone's interests to prevent it.

'Stunning essential reading' DANIEL H. PINK, author of Drive

If we continue as we are, the world s population will peak in the next few decades and then begin a sudden, rapid decline. It would be easy to think that fewer people would be better: better for the planet, better for the people who remain. In After the Spike, two leading population economists ask us to think again.

Carefully weighing the evidence that surrounds this controversial subject, Dean Spears and Mike Geruso explain why depopulation is not the solution some purport it to be. Instead, as humanity s future shrinks it will become increasingly fragile and less certain, making it even harder to escape poverty, disease and injustice.

Halting this decline need not mean sacrificing a greener future or reverting to past inequities; in fact, it can only be achieved with women s reproductive rights and individual choice as driving forces. But if we want future generations to enjoy lives better than our own, it s time to take seriously our collective task of lifting the burdens of parents and other carers.

Deeply reasoned and uncompromisingly humane, After the Spike sheds important light on a dramatic shift in the human story and asks us to consider what future we want for our planet, our children, and one another.

Remarkable has challenged, and changed, my thinking about population PETER SINGER, author of Animal Liberation

Dissolves our preconceptions through evidence, rigour and a deep compassion for all TOBY ORD, author of The Precipice

Insights and rigour are matched by a human and empathetic narrative throughout HANNAH RITCHIE, author of Not the End of the World

I had my mind blown over and over ZACH WEINERSMITH, coauthor of A City on Mars

An eye-opening exploration of humanity’s unprecedented path to global depopulation and why it''s in everyone''s interests to prevent it

''Stunning . . . essential reading'' Daniel H. Pink, author of Drive

If we continue as we are, with birth rates falling globally, the world’s human population will peak in the next few decades – and then begin a sudden and rapid decline. It would be easy to think that fewer people would be better: better for the planet, better for the people who remain. In After the Spike, two leading population economists ask us to think again.

Carefully weighing the evidence and the many claims that surround this controversial subject, Dean Spears and Mike Geruso explain why depopulation is not the solution we urgently need for the climate crisis, nor will it improve lives. Far more likely is that the progress which has raised living standards so dramatically over the last two centuries will slow or even reverse. As humanity’s future shrinks, it will become more fragile and less certain, and harder for us to escape from global poverty, disease and injustice.

Halting this decline and stabilising the population need not mean sacrificing a greener future or reverting to past gender inequities. In fact, they argue, it can only be achieved with women’s reproductive rights and individual choice as driving forces. But if we want future generations to enjoy lives even better than our own, it’s time to take seriously society’s collective task of lifting the burdens of parents and other carers.

Deeply reasoned and uncompromisingly humane, After the Spike sheds important light on a dramatic shift in the human story and asks us to consider what future we should want for our planet, our children, and one another.

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‘A remarkable blend of empirical research and philosophical argument that has challenged, and changed, my thinking about population’ Peter Singer, author of Animal Liberation

‘After the Spike dissolves our preconceptions through evidence, rigour and a deep compassion for all’ Toby Ord, author of The Precipice

‘As stirring as it is thoughtful, rigorous and morally uncompromising’ Anastasia Berg, author of What Are Children For?

‘I had my mind blown over and over and over’ Zach Weinersmith, coauthor of A City on Mars

‘Fascinating, thoughtful and timely’ Simon Johnson, Nobel Laureate in Economics

‘The insights and rigour are matched by human and empathetic narrative throughout’ Hannah Ritchie, author of Not the End of the World

‘The most interesting and important book I’ve read in years’ Katy Milkman, author of How to Change

• | Author: Dean Spears, Michael Geruso
• | Publisher: Vintage Publishing
• | Publication Date: Jul 10, 2025
• | Number of Pages:
• | Language: eng
• | Binding: Paperback / softback
• | ISBN-13: 9781847928368
• | ISBN-10: 1847928366