We started implanting some of these structures over 14 years ago.

It was a little over 100 years ago that Beijerinck discovered viruses.

Two years ago, three years ago, about four years ago, markets did well.

Russia terminated the production of fissile material for nuclear weapons over 10 years ago.

In short, they are acquiring the status that they had a million years ago, 10,000 years ago, 100,000 years ago.

200 years ago, in Parliament, in Great Britain, there was a long argument over economy versus morality.

When we started, over 20 years ago, 1,000 children were being paralyzed every single day by this virus.

And she started it about 10 years ago, and today, she educates over a quarter million African girls.

So a little over three years ago, Kirsty Boyle and I started a project we called Open Materials.

Again, Bandura recognized this years ago, decades ago.

Six years ago,

He died 25 years ago this year, and was born 75 years ago this year.

In fact, some years ago, Bill Joy wrote an article expressing tremendous concern about robots taking us over, etc.

Just over 30 years ago, the nations of the world assembled at Alma Ata and made this iconic declaration.

That's 25 years ago.

That was years ago.

CAPTCHA Project is something that we did here at Carnegie Melllon over 10 years ago, and it's been used everywhere.

And then you created Earth about 4.5 billion years ago, and then you got life about four billion years ago, and then you got hominids about 0.006 billion years ago, and then you got our version of hominids about 0.0015 billion years ago.

And it s actually something that we invented a few years ago, or created a few years ago.

And what these layers that's what the surface used to be a million years ago, 10 million years ago, 100 million years ago, and you get deposits on top of them.

And to me, knowledge is something that is extremely valuable. So, maybe, over 10 years ago now our library got flooded.

The debate over the impact that new nickel projects will have on New Caledonia's pristine maritime environment began some years ago.

It happened 225 years ago.

I married eight years ago.

He died three years ago.

20 years ago, 30 years ago, only big professional astronomers with very big telescopes could see far into space.

Two years ago that remained an informal discussion, but the consensus resolution we adopted two years ago reflected those advances.

It was taken 18 years ago.

That was just 10,000 years ago.

This ship sank 1,500 years ago.

A hundred years ago, guess what?

Humans appeared about 200,000 years ago.

This story began four years ago.

But that was me years ago.

A hundred years ago, we didn't.

The accident happened two years ago.

That event happened 15 years ago.

My father died four years ago.

I visited Fukuoka ten years ago.

I quit smoking two years ago.

I began playing golf years ago.

My grandfather died five years ago.

His uncle died five years ago.

He went there ten years ago.

They moved here two years ago.