History Occupied for thousands of years, the Chinguetti region was once a broad savannah.

Indeed, for thousands of years, until the Industrial Revolution, incomes stagnated.

And so what we are seeing is evidence of a refined technique that was being handed down over thousands and thousands of years, all over the world.

If it's not picked up by a human, like me and you, it'll stay there for thousands and thousands of years.

And the reason is that tool use, in the beginning for thousands and thousands of years, everything has been a physical modification of self.

How many tens of thousands of years does it go back?

COLUMBUS For millennia, infants have sometimes been fed another mother s breast milk.

And biological pest control, by the way, or these good bugs that we are talking about, they've existed in the world for thousands and thousands of years, for a long, long time.

They have evolved over millennia.

For almost all of its millions and billions of years, there was no life on Earth at all.

This slide sums up thousands of pages of technical documents that we've been working on over the past two years.

3.8 billion years of field testing.

People have been debating the causes of happiness for a really long time, in fact for thousands of years, but it seems like many of those debates remain unresolved.

Thousands of candles illuminated the church during the ceremony.

I want it above ground where it can be inspected for thousands and thousands of years.

They've had billions of years to do it, but especially during the earliest period of biological evolution on this planet.

And then it became domesticated thousands of years ago.

Tens of thousands of families have been affected by violent crime in Mexico over the past six years and the new president has promised to make them a priority during his time in office.

We are the product of thousands of millions of years of evolution.

After thousands upon thousands of years, their enemies have learned that these butterflies are poisonous.

The coral can take us back hundreds and thousands of years.

It will take years and billions of dollars to change this state of affairs

Darwinian evolution is slow it takes hundreds of thousands of years.

Tom took thousands of pictures during his vacation, but then never looked at them.

I've been a scanning electron microscopist for many years, I have thousands of electron micrographs, and when I'm staring at the mycelium, I realize that they are microfiltration membranes.

Each has persisted for thousands to millions of years.

Bacteria have been on the Earth for billions of years humans, couple hundred thousand.

We are not the determined product of billions of years of evolutionary plotting and planning.

Many animals that lived thousands of years ago are now extinct.

And there's thousands and thousands and thousands of images.

Cultures discovered the key feature of valuation thousands of years ago.

In about 40,000 years it will be the closest star for a period of several thousand years.

Tom suffered from migraine headaches for years.

That's as opposed to billions just a few years ago.

The Inuit have lived in the area for thousands of years.

And about 20 years went by.

You can find out where your relatives come from you can do your genealogy going back thousands of years.

And a thousand years later, this impulse to notate took an entirely different form.

For billions of years, the universe evolved completely without notice.

They've been here for billions of years, and what they are are single celled microscopic organisms.

Now, diarrhea's interesting because it's been around for thousands of years, ever since humankind really lived side by side enough to have really polluted water.

And we know what they are. Billions of years ago, and billions of light years away, the material at the center of a galaxy collapsed towards a super massive black hole.

The Saudis also employed thousands of Pakistani soldiers during the 1991 Gulf War.

Throughout the day and night, hundreds of thousands lined up to view the guarded casket.

Stars are basically nuclear fusion machines that self organize and self sustain themselves for billions of years, this order against the entropy of the world.