New DNA Evidence Changes When The Very First Australians First Arrived!

When Did Humans First Arrive in Australia? A DNA Study Challenges the Timeline

For years, archaeological evidence from sites like Madjedbebe in northern Australia has suggested that humans arrived on the continent at least 65,000 years ago — making it one of the earliest known human settlements outside Africa. But a groundbreaking new theory, based on Neanderthal DNA evidence, is now challenging that date.

In this video, we explore the bold claims made by archaeologists Jim Allen and James O'Connell, who argue that modern humans couldn’t have arrived in Australia before 50,000 years ago, based on when humans first interbred with Neanderthals in Eurasia. Since all non-African populations — including Indigenous Australians — carry about 2% Neanderthal DNA, they suggest that human arrival in Sahul must have happened after that interbreeding event.

Whether this DNA-based model will hold up remains to be seen, but one thing is certain — the story of Australia's first humans is far from settled.

Sources:

Allen, J., & O’Connell, J. (2025). Archaeology in Oceania,

Clarkson, C. et al. (2017). "Human occupation of northern Australia by 65,000 years ago", Nature,

Hajdinjak, M. et al. (2021). "Initial Upper Palaeolithic humans in Europe had recent Neanderthal ancestry", Nature

Hershkovitz, I. et al. (2018). "The earliest modern humans outside Africa", Science

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