We may earn a commission from links on this page.

Scientists studying the bacteria behind stomach ulcers may have just rewritten the textbook on human migration.

Researchers analyzing Otzi, the famous Iceman preserved in the Italian Alps for 5,300 years, found that the mummy’s stomach bacteria was not as expected. Watch the video to see how they used insight from Otzi to show that relatively recent human migrations actually created Europe as we know it.