All language subtitles for BBC - Ape-Man, Adventures in Human Evolution 5 - Exodus

200 ,000 years ago, human -like
creatures had evolved with brains and

almost like ours.

Yet these creatures were not us.

Our own species, Homo sapiens, had yet
to appear.

The study of human evolution is one of
the most controversial areas of science.

And when archaeologists brought together
new fossil proof for the emergence of

our own species, it was clear that this
would be no ordinary scientific

convention. There had to be tremendous
security.

The fossils had to be escorted in a
convoy from the airport.

There also had to be special exhibition
cases which were bulletproof and even

bombproof.

against attacks by a terrorist or
creationist.

The meeting was called to discuss one of
the most important questions scientists

have ever faced.

Where and when our species first walked
the Earth?

How did our journey begin?

On the southernmost tip of Africa, 200
miles from Cape Town, lies a place

Classis River Mouth.

When fishermen climbed up into one of
the many caves that surround the site,

they had no idea what they would
uncover.

Soon scientists came to investigate what
had been found.

Part of a skull, the frontal bone above
the eyes, important because it lacked

the prominent brow ridges that are a
distinctive feature of archaic hominids.

Then something else, a jawbone with a
clearly defined chin, something only

humans possess.

The absence of brow ridges and the
presence of a chin, these are modern

attributes. And this would indicate that
we're dealing here with modern people

and not with archaic people.

This was a human like us as opposed to
archaic kinds of humans who...

preceded us in Africa.

To those who first examined them, the
finds made no sense at all.

They seemed to be the wrong bones, in
the wrong place, at the wrong time.

They were clearly the remains of people
just like us, yet they also seemed to be

very old, 40 ,000 years old, if not
more.

But 40 ,000 years ago, there weren't
meant to be modern humans living in

Scientists were convinced that the only
members of our species who existed at

that time had evolved many thousands of
miles away in what is now France.

Ever since modern human remains were
found in French caves 150 years ago, it

assumed that our species had evolved in
Europe.

But British anthropologist Chris
Stringer wasn't convinced.

He set off on a marathon tour around the
fossil archives of Europe, determined

to judge the bones for himself.

He planned to make the first detailed
comparison between two sets of remains,

those belonging to early modern humans
and those of an older species of

the Neanderthals.

We were supposed to have evolved from
the Neanderthals, but would the bones

this out?

Right from the beginning, the
Neanderthal fossils that I looked at in

seemed to be showing a consistent
pattern.

They had a double arched brow ridge at
the front.

They were long and low.

They had almost a spherical shape when
viewed from behind.

There were also features in the lower
jaw and in the rest of the skeleton that

seemed to mark them off from the modern
human fossils that I was looking at.

And if anything, the Neanderthals
through time seemed to be getting more

different from the early modern humans
rather than more like them.

which was not, of course, what one would
expect if they were their ancestors.

Across Europe, in museum after museum,
Christringer could find no firm evidence

to show how our species might have
evolved from the Neanderthals.

And by the time he arrived in Paris, at
the end of his trip, he was beginning to

think that an answer might never be
found.

When I got here to Paris, I'd seen and
measured a lot of fossils and I already

had a pretty clear idea of their
features.

But one of the biggest surprises for me
here was a fossil from Africa, from

Morocco, from a site called Djibouti
Hood.

And this fossil had been called an
African Neanderthal.

But as soon as I saw it, I realised that
it was not like any Neanderthal I'd

seen so far.

In particular, the face was flat.

The nose was relatively small. The
cheekbones were much more like those of

modern human.

And so it seemed, at least in the face,
to be a better ancestor, potentially,

for modern humans than any of the
Neanderthals were.

And although no one took Africa
seriously as a place of origin, the

origin for modern humans, this fossil,
as I analysed and worked on it in

material, began to suggest that Africa
might indeed be the homeland of modern

humans.

The idea that our species might have
first emerged in Africa was difficult to

prove.

Finding the true age of the modern human
remains found with classes was the

first step.

But the technique of radiocarbon dating
couldn't look far enough back into the

past to be of any use.

But then the archaeologists working at
the site wondered if there might be a

to date objects found alongside the
human remains.

Some of the earliest information we had
on dating, fixing the time period when

occupation began in this cave, came from
a humble shell.

And this is the operculum, the trapdoor,
of a turban shell.

Shells contained chemical traces.

which can reveal how hot or cold the sea
was when they first formed.

And when tests were carried out on the
classy shells, the result came as quite

surprise.

These came from waters that were as warm
as the present.

And you get warm waters in the oceans
between the ice ages. So this came from

the last...

in between Ice Age, in other words, an
interglacial period.

And that last interglacial period was
120 ,000 years ago.

Other dating techniques have supported
these findings.

And we now have reasonably firmly
established that these deposits are in

range between 120 and where they're
working, 90 ,000 years old.

And it's from the level that they're
working where human remains have come.

so we know we can bracket those human
remains in a very definite time range.

90 ,000 years old. The Class V fossils
are at least 50 ,000 years older.

than any similar human remains found in
Europe or elsewhere.

Then scientists found new evidence, not
in ancient caves, but in our blood.

genetic research began to transform the
study of human origins.

Taking blood samples from different
communities across the world, scientists

looked for variations in the genes of
people living in Africa, Europe and

These tiny variants in our genetic
makeup take thousands of generations to

up.

We found 199 variants in Africa, we
found 98 in Europe, and we found 73 in

We're seeing a lot more diversity in
Africa. And what this suggests is that

Asian and the European populations
simply haven't had enough time to

diversity, whereas the African
populations have had a lot more time,

that they're an ancestral population.

The main conclusion of this work is that
all individuals from around the world,

whether they be African or of non
-African descent, derived from a single

ancestral population that existed in
Africa probably around 150 ,000 years

is descended from the same small group
of early humans who lived in Africa more

than a hundred thousand years ago.

When Chris Stringer presented the theory
that our species first evolved in

Africa, he got a mixed reception from
his scientific peers.

No one doubted that our ancient
ancestors had lived there, but certainly

view that Africa could have been the
single place of origin of our species

long way from being demonstrated
convincingly.

And while the genetic data supported
Chris Stringer's theory that our species

was African in origin, now other
scientists began to question whether

first African ancestors were fully
modern humans.

Many people were prepared to accept that
the modern body form had evolved in

Africa at quite an early date, but there
was still this separate question of

when modern human behaviour, when the
modern human mind... when language

And certainly some people then
challenged the idea that that had

a long period of time in Africa.

Some people believe that it was a much
more recent development and therefore

modern anatomy actually evolved before
modern human behavior.

Then, on the same stretch of South
Africa's coast, just a hundred miles

Classis, scientists found another cave.

The team investigating the flight is led
by Chris Henshelwood, who has been

exploring the caves on this coast for
many years.

I first came to this area when I was
about five years old, as a child.

Over the years I used to wander around
these dunes and I was always fascinated

by what I saw. They looked like stone
tools to me, lots of shells, perhaps old

fireplaces and old bones.

Years later I decided to do archaeology.

That's why I'm here today, because I
think the area is very rich.

Chris Henshelwood remembered a small
cave that had fascinated him as a child.

It's little more than a gap in the cliff
face, but large enough to offer shelter

from the wind and the rain.

And when he and his team started to dig
down through the cave floor, they soon

found evidence of human occupation going
back many thousands of years.

The top section of the cave over here
dates to within the last 2 ,000 years,

whereas this yellow sand below it was
deposited a very, very much earlier

Almost certainly, this sand blew into
the cave about 100 ,000 years ago.

That means that all the layers below
this are older than 100 ,000 years old.

Laid out in the layers of Earth was a
perfectly preserved record for the

occupation of this cave from the present
day to well over a hundred thousand

years ago, the time when our species
first emerged.

The team at Blombos have removed tons of
sand and debris working down through

the cave floor.

Concealed in the rubble, they have found
a hoard of ancient artifacts.

There's a range of stone tools made from
a specially hard rock called silkrit, a

rock only found 20 miles away, expertly
worked to produce razor -sharp double

-sided blades.

That tells me that there was a clear
mental template.

They knew what they wanted to create.

They didn't wander around the landscape
picking up a piece of rock, banging it,

and cutting an animal open.

This is cognitive thought. This is
advanced thought. You know what you want

make, you go to the source, you get the
raw material, you bring it back, and you

make it, and you make the same thing
over and over again to exactly the same

precision. I think that is very advanced
behaviour.

Some of the bone tools found at the site
reveal even more about the people who

once used them.

This is an awl, a tool that was used for
piercing leather.

These are very important indeed because
they indicate to us that people 100 ,000

years ago were probably making clothing.

These tools are of a sophistication and
complexity which had only been found in

Europe. Here in Africa...

with new evidence of people with the
same kind of skills living 50 ,000 years

earlier.

From the same levels as the tools, the
Blombos team then made another find,

evidence that shellfish had been brought
to the cave.

People in early periods generally in the
world do not collect shellfish. I think

perhaps what it is is that they don't
realize that shellfish are food.

I think you need to have the ability,
the brain power, if you want to call it,

the cognitive ability.

To be able to say, there's shellfish
down there, we can collect them, we can

cook them, and we can eat them.

Collecting shellfish marks a dramatic
change in behavior.

For archaeologists, it is evidence that
these people were now thinking about

their world in a different way.

So I think...

What you're seeing here is the kind of
behaviour where people are able to look

at their whole environment and exploit a
wide range of foodstuffs.

These species of shellfish are all quite
common on the rocks today and

are species that were collected and
eaten in quantity by the people who

the caves.

The shellfish are interesting not only
because they were a mainstay of diet for

coastal people, but also because we
think that they were used as bait for

catching other marine animals.

And we're particularly interested in
catching a fish at Long Horse Cave

this site is giving us the first good
evidence that people 100 ,000 years

were capable of catching fish, indeed
that they could recognize fish as

potential food sources.

Evidence of fishing came early on with
the discovery of large fish bones in the

lower layers of the cave.

Fishing is interesting because it's one
of those activities that requires

cooperation between people in a group.

You don't just go down to the rocks and
go and fish.

You also need to have some kind of
template in your mind as to...

How are you going to go down there? What
kind of equipment are you going to

need? How are you going to lure the fish
in? How are you going to work as a

couple of people together to catch that
fish?

We think that they were catching them
perhaps by throwing bait into the water

and in a deep gully like this.

Fairly large fish.

would very likely take that vent and
then be available for people to spear or

otherwise try to gap out of the water.

Cushing like this demonstrates more than
just an ability to survive.

It tells us that these people were able
to think ahead, to plan ahead, to get

an activity together which involved the
cooperation of a number of people in

that group and then carry it off.

And they carry it off, we know they
carry it off because the traces of the

are in the deposit over here.

Along the coast at Classies, Hilary
Deacon has also been looking for

modern human behavior.

We're coming up to the top levels of the
site, and very nicely exposed here

are a series of haws. Haws like this
occur right the way through the deposit,

but they're particularly clear here.

The ash layers of haws, fires made again
and again in the same place.

have built up in the cave.

This is the kind of thing that was being
done 100 ,000 years ago.

It was done 5 ,000 years ago, and it's
still being done in the prisons in

certain parts of Africa.

For archaeologists, these ash layers
show a continuity between the life lived

here more recently and the original
behavior of the first modern humans 100

years ago.

But the cliff base also contains other
clues to the lives of these early

Embedded in the rock, Hilary Deacon has
found traces of a substance that is

loaded with significance.

Red oak is clays which have been stained
by iron oxide, and they have this

brilliant red color. In modern -day
Africa, in very many places, you have

coding for different parts of life.

Red particularly symbolizes living. It
symbolizes blood. And this is used

in the present as coloring material for
people who are going through initiation.

One place where red ochre is still used
today in initiation ceremonies and other

rituals is Griquatown, a small community
in South Africa's Northern Cape.

As the entire community celebrates
outside, a group of older women carry

ancient ceremony designed to mark a
young girl's transition to adult life.

The girl will be smeared with blood red
paste made from ochre.

It's a moving ceremony and an example of
symbolic behavior, a characteristic no

other species has ever displayed.

Chris Henshelwood began looking for red
ochre at Blombos.

but no trace of it could be found.

Then one day, he discovered why.

The people regarded the ochre as being
so important that they stored it very

carefully.

When I excavated these layers, I put my
hand in here and I could take out pieces

of ochre that had been stored here for
over 100 ,000 years.

I think that shows how important ochre
was to these people.

Further examination showed that the
ochre had indeed been used.

If you have a look at this piece fairly
carefully, you can see the Australasians

over here.

This is where they've taken this piece
and they've grated it on a rock.

In fact, on this very rock, somebody sat
here 100 ,000 years ago and they rubbed

it around to make a fine powder.

We have some traces of the powder left
here. They're very faint now.

But we have tested the powder, and it
definitely is ochre.

We think that people in this cave used
it to decorate themselves with and also

to decorate bone tools and stone
artifacts.

In fact, we found evidence of some of
the tools and artifacts here with the

ochre stain installed on it.

This bone artifact was used probably as
a gouge of some sort.

What I think is very unusual about it,
most unusual about it, is that it left

the imprint of the maker's hand on the
tool on both sides.

The maker, or the person who was using
the artifact, had ochre staining on

hands. And here you can very clearly see
where this part of the hand has been

transferred onto the artifact over here.

And if I turn it over, you'll see where
my thumb was before.

It's left a perfect thumbprint over here
in ochre as well.

The people of Lombos clearly valued
ochre and used it to decorate their

possessions and their bodies.

But did they really have the ability to
think like us?

There was one more piece of evidence in
the cave.

On the end of a piece of red ochre,
there are a series of tiny cut marks.

They've taken a stone point and they cut
lines in one direction and then cut

similar lines in the opposite direction,
creating a diamond mesh pattern.

Deliberately. That's the important
point. Deliberately. This is not

I think they've been trying to create
something that's symbolic here.

Perhaps we have the earliest evidence of
an attempt at creating something you

could call art.

The people who lived along the African
coast 100 ,000 years ago were far more

sophisticated than earlier members of
the human family.

They fished. They cooked their food on
hearths. They decorated themselves and

their artifacts.

They thought in a symbolic way.

They were fully modern humans.

They were us.

Then researchers analyzing genetic
variations between living human

made a further discovery about our
distant origins.

By comparing the genetic diversity
outside of Africa to what we're

inside of Africa, we've been able to
estimate that early in the history of

modern humans in Africa, there was
subdivision amongst African populations.

At some time after that, around 100 ,000
years ago, there was the migration of a

small group, a subset of the African
populations, migrated out of Africa,

spreading across the rest of the globe.

Soon after our species first evolved,
some of our ancestors began to move from

Africa and out into the rest of the
world.

Archaeologists in Australia have
recently discovered that modern humans

to this isolated continent 60 ,000 years
ago, much earlier than anyone had

previously thought.

Scientists began to look for a motive.

Why had our ancestors moved so far and
so far from the place where they

In prehistory, we know that

most people were hunter -gatherers,
foragers.

And a hunter -gathering lifestyle is a
pretty good lifestyle.

But it's not one that you can absolutely
count on.

However, in cases like Placis River
Mouth and Blombo, we find the use of

resources and moving to coastal
resources provides a new potential.

You have more dependable food and you
have food in larger quantities and your

population can grow. But once it has
grown, you're actually harvesting

intensively those resources.

And the shellfish do respond.

They become rare up to the point that
they can disappear completely from each

other.

So what you have is that that population
that was first allowed to grow now

needs to move on in order to support
itself.

They cannot move back because there's
more people behind.

So they have to move forward.

and along the coast

at

some time between a hundred and sixty
thousand years ago people occupied

all this coastline and extended and
dispersed down to Southeast Asia,

and eventually crossed Australia.

To our coast's living ancestors, the
world was one long beach, and generation

generation, they moved along it.

Coastal migration would have allowed our
ancestors to keep moving through a

world that they knew.

The interesting thing about the coastal
route is that you've got a narrow

coastal zone, and if people were adapted
to that, then almost they were pre

-adapted to go all the way from Africa
through southern Asia, all the way

towards Australia, more or less staying
in one zone, which they were already

used to.

It does seem astonishing to us that they
could have travelled so far.

But we have to remember that they
weren't exploring for knowledge or gold

glory. They were doing it to survive.

And, of course, 10 ,000 or 20 ,000 miles
seems an enormous distance to us. But

they only had to expand their
territories by one mile every year. And

years, they'd gone 10 ,000 miles.

And on this great journey, scientists
believe that our species began to

vital new skills.

By the time you have the first modern
humans, they all have the potential of

invention that we have.

And I think that's actually what makes
them modern.

They can invent solutions to new
problems.

So once exposed to these coastal areas,
and once they actually manage to

control... these resources from there to
a boat from there to a bigger boat

from there to net from there to harpoon
it's only a step

but

not all modern humans took the coastal
route out of africa to the north of the

continent there are traces of their
presence further inland

A field of stones where modern humans
came to find the raw material for tools.

This place was used as a quarry.

People came here to make stone tools and
the hillsides littered.

And stone tools, I've just found one.

And a few years ago, some Belgian
archaeologists very unexpectedly found a

skeleton in this pit.

The skeleton found among these rocks was
dated to 60 ,000 years old.

So there were modern human people here
making these stone tools, quarrying

then taking them away at least 60 ,000
years ago.

The significance of this quarry field is
its proximity to another natural route

out of Africa, the River Nile.

This river valley marks the course for
what scientists believe was a second and

later wave of migration.

The Nile Valley was like a permanent
oasis running for thousands of miles.

Humans would have been here in the Stone
Age, living on the banks of the river,

and following the river in a northerly
direction would have led them right up

into northeast Africa and into the
Middle East.

In time...

These migrants also moved on, around the
Mediterranean Sea, further north into

Europe, gradually populating the world
with members of our own species.

We do not yet know how many of us there
were at the very beginning.

It is difficult to calculate the size of
the first populations.

But however many of us, or however few
there were, places like Blombos and

Krasis are where the very first of our
kind emerged.

And these beaches were perhaps our first
home.

Our species has come a long way in a
short time.

And what unites us in terms of our
biology and our shared history is very

important. We shouldn't forget that.

And despite the differences we have
around the world now, those have grown

very recently.

And I think what we share in common
should be as important or more important

than the things which divide us.

There were other species of human on the
earth as we first emerged from Africa.

What happened when we met would put our
unique ingenuity to its greatest test.

We enter the final chapter of our story,
the meeting between us and the other

species who had lived undisturbed until
we arrived.