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This is a scientific American 60 second science. I'm Christopher Intagliata.

The paleo diet is a popular high protein diet that aims to mimic what our hunter-gatherer

ancestors ate. But what we buy at the supermarket doesn't quite approximate

those ancient foods. Take for example, Star Lily Roots. Heard of those?

And case to the black yans.

Lynn Wadley is an archaeologist

at the University of the Vitvatr's Rand in South Africa.

Her team recently discovered the charred remains of Star Lily roots in South Africa's border cave,

hunks of roasted root that date to 170,000 years ago.

And so there's greater glucose availability once the root vegetables are cooked.

And they knew that nearly 200,000 years ago, which I think is extraordinary, or maybe they didn't know the chemistry of it but they

would have realized that they feel far more satisfied after eating a meal that is cooked

than eating one that is raw.

It's not easy to identify a charred chunk of ancient food though.

So Wadley's team gathered an array of raw ancient foodstuffs

and then roasted and charred them in ovens and campfires.

They then did visual comparisons to the ancient sample and observed them both in a scanning electron

microscope, which revealed that the charred leftovers from that meal 170,000 years ago

were probably chunks of Star Lily Root.

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