Culture | Bugs in the system

The role of bacteria and viruses in world history

Microbes maketh man, says Jonathan Kennedy

643501 Cardinal Chigi visiting plague victims, Italy, 18th century; (add.info.: Cardinal Chigi visiting plague victims. Italy, 18th century.); G. Dagli Orti /© NPL - DeA Picture Library.Please note: This photograph requires additional permission prior to use. If you wish to reproduce this image, please contact Bridgeman Images and we will manage the permission request on your behalf.
A plague in all their housesImage: Bridgeman

For the first 250,000 years after Homo sapiens evolved, they existed on Earth alongside several other species of human in Africa, Asia and Europe. Around 50,000 years ago, however, H. sapiens left Africa and migrated across the world; around the same time, all the other species began to disappear. The fossil record shows that the last Neanderthals died out roughly 39,000 years ago, leaving only H. sapiens.

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