Homo erectus or Homo ergaster, between 50,000 and 100,000 years before language.

I think we're going to move from a Homo sapiens into a Homo evolutis.

The Homo studiosus the studying man.

Way to crack the case Sherlock Homo!

Homo erectus left Africa 90,000 generations ago.

But that's terrible. We are homo sapiens.

So, obviously Homo sapiens at the top.

We are Homo duplex, as Durkheim explained.

From left to right, we've got Homo erectus, Homo habilis, and Australopithecus now called Paranthropus boisei, the robust australopithecine.

Homo erectus, up in the far right corner,

They use words like Homo Erectus and Australopithecus

Did they meet Homo erectus along the way?

Homo erectus made the same tool for 30,000 generations.

Homo Habilis was the first animal to construct tools.

We know that Homo sapiens have religion, that's us.

Recently, I dreamt that Homo! was said to my face.

Suddenly humans show up, Homo erectus, big old melon head.

Durkheim even called us Homo duplex, or two level man.

Because this is exactly what our ancestors, the Homo erectus, did.

Homo erectus, one of our human ancestors, actually lived in this region.

The earliest members of our lineage, the genus Homo, were darkly pigmented.

He actually coined the term Homo sapiens it means wise man in Latin.

Now look at that beautiful, big, old forehead on the Homo sapiens skull.

Homo sapiens lived throughout Africa, but only some of these people were our ancestors.

This forward thinking marked the arrival of a new people. Homo sapiens. 150 TYA

Our newest brain, our Homo sapien brain, our neocortex, corresponds with the what level.

Our newest brain, our Homo Sapien brain, our neocortex, corresponds with the what level.

And we are Homo duplex because we evolved by multilevel selection, as Darwin explained.

But these early homo sapiens shared the planet with two of their distant cousins.

I mean, it's self awareness that separates Homo sapiens from earlier instances of our mankind.

They were not as successful and as widespread as the Homo sapiens that we are.

It took nature 100 million years to make the ape stand up and become Homo sapiens.

But, what about heidelbergensis before us, and erectus, and all the way back to Homo hails.

Why didn't Homo erectus evolve into separate species, or sub species rather, human races around the world?

And here is a skull of a Homo erectus, which I just pulled off the shelf there.

Yes, indeed, the old man is there, as is this famous pen drawing of the Homo Vitruvianus.

I just thought it might be cooler to use a sort of fossil skull for Homo sapiens.

These Acheulian hand axes they're named after St. Acheul in France, where finds were made in 19th century have been unearthed in their thousands, scattered across Asia, Europe and Africa, almost everywhere Homo erectus and Homo ergaster roamed.

So, Homo erectus was the first human ancestor to leave Africa and begin its spread across the globe.

At some point, Homo Erectus resisted an instinctual fear of fire. And fire was first tamed. 1.8 MYA

One is an Acheulean hand axe from half a million years ago of the kind made by Homo erectus.

You know, Homo habilis 2.5 million years ago, they're considered to be a good candidate for the original toolmakers.

And then on the right hand side we have a Homo sapiens skull from about 20,000 years ago in Germany.

What's missing is that we are Homo duplex, but modern, secular society was built to satisfy our lower, profane selves.

Homo erectus had a big brain. Some made hand axes, some built fires, and some may even have worn clothing.