After the Spike

With stunning clarity, Spears and Geruso show why our assumptions about population, progress and prosperity are leading us astray. If you want to understand where humanity is going, and why that matters, this book is essential reading

Daniel H. Pink, author of Drive

Fascinating, thoughtful and timely. In ten years, everyone will be talking about global demographic decline and what to do about it

Simon Johnson, Nobel Laureate in Economics

Spears and Geruso take us by the hand to understand the most dramatic period of human history – and what could happen next. The insights and rigour – which come thick and fast – are matched by human and empathetic narrative throughout

Hannah Ritchie, author of Not the End of the World

Spears and Geruso meticulously take apart all the myths and confusion surrounding the incoming demographic changes for our species. I had my mind blown over and over and over

Zach Weinersmith, co-author of A City on Mars

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 reveals how humanity has come to a profound turning point in its history and dissolves our preconceptions about population 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. After the Spike shows why a stable population is not just compatible with climate action, gender equality and a higher, equitably-distributed standard of living, but why it may just be their necessary condition

Anastasia Berg, author of What Are Children For?

The most interesting and important book I’ve read in years, packed with eye-opening and surprising facts

Katy Milkman, author of How to Change

A fascinating introduction to one of the most important policy questions of our time. This engaging, informative book will make you question what you have heard about population. With depth and nuance, it shows how parenting can be reclaimed as a progressive cause

Maya Eden, co-editor of Economics and Philosophy

I don't agree with every suggestion in this book of course, but I think it offers up some interesting and important conversations that we’d do well to take seriously. And a world in which parenting is easier would be a huge improvement!

Bill McKibben, author of Here Comes the Sun

An important book. Demography is destiny; Spears and Geruso tell a surprising story and show us how to shape that destiny for a sustainable, flourishing world

Anne-Marie Slaughter, author of Why Women Still Can't Have It All

Spears and Geruso present a clear-eyed and compassionate argument about what we have to lose – not just from the worldwide drop in births already underway, but also from harmful and counterproductive attempts to boost births by coercing women’s and couple’s childbearing decisions

Diana Greene Foster, professor of obstetrics, gynaecology and reproductive sciences at the University of California, San Francisco

The poet Robert Frost pondered whether the end would come from fire or ice, but After the Spike argues it may come from people simply choosing not to have children. In this sharp and engaging book, Spears and Geruso make the case for people – and how we must respond to the existential threat of depopulation

Lant Pritchett, former professor of the Practice of International Development, Kennedy School of Government, Harvard University

What an eye-opener: Spears and Geruso masterfully weave together demographic data, economic theory, and vital moral insights into a gripping tale of loss to come. They explain why it matters so much that we find a better path

Dr. Richard Y. Chappell, author of Parfit’s Ethics

A punchy read

Sunday Times

A brisk and accessible outline of the basic facts of the demographic precipice on the edge of which mankind currently stands

Week