Death as told by a sapiens to a neanderthal

‘We would love to discover that each species has a biological clock in its cells, because, if that clock existed and if we were able to find it, perhaps we could stop it and thus become eternal,’ Arsuaga tells Mills in this book, in which science is intertwined with literature. The paleontologist reveals essential aspects of our existence to the writer, and debates the advisability of transmitting his random vision of life to a dieting Mills, who discovers that old age is a country in which he still feels like a foreigner.