For the first time in over ten millennia, the rate of human population growth is slowing down. The global population is forecast to begin declining in the second half of this century, and in 10,000 years’ time our species will likely be extinct.

In The Decline and Fall of the Human Empire, Henry Gee shows how we arrived at this crucial moment in history, beginning his story deep in the palaeolithic past and charting our dramatic rise from one species of human among many to the most dominant animal ever to live on Earth.

But rapid climate change, a stagnating global economy, falling birth rates and an unexplainable decline in average human sperm count are combining to make our chances for longevity increasingly slim. There could be a way forward, but the launch window is narrow . . .