Well, the question of origins, as with so many other questions in biology, seems to have been answered by Darwin over a century ago.

A dog runs after a cat, and the cat after a mouse.

Just a quarter century ago, polio was endemic in 125 countries and paralyzed more than 1,000 children every day.

In the 20th century it would become the second most popular, behind Hamlet .

I was at a wall.

I don't want to sound pretentious saying that, but this is my drawing made on a digital pad a couple of years ago well into the 21st century, 500 years later.

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

Geography References

Greenland took a little while to start reacting to the warming climate of the past century, but it really started galloping along about 20 years ago.

A century ago, the economist and political scientist Joseph Schumpeter argued that the central virtue of a market economy was its capacity to innovate.

Science fiction author H. G. Wells noted, Pym tells what a very intelligent mind could imagine about the south polar region a century ago.

I had a fire nine days ago.

We need to take a step back.

There is a parking lot behind the theater.

I heard a noise behind me.

I gave up smoking a year ago.

I quit smoking a year ago.

We are in a period of long cultural stasis from a million years ago until around 60,000 to 70,000 years ago.

A multimedia exhibition that will take you more than a thousand years back tells the story of one of the men buried in the 9th century cemetery Na Valách.

And one month ago we have unveiled it.

We're going after an orbital prize.

There was a large garden behind the house.

The buses left one after another.

That was only a year ago.

Customers came one after another.

There's a garden behind our house.

Tom ducked behind a car.

Tom died about a year ago.

In 1999, Cruyff was voted European Player of the Century in an election held by the International Federation of Football History Statistics, and came second behind Pelé in their World Player of the Century poll.

This century there's a shift.

A century is one hundred years.

His life spanned nearly a century.

Osasco Um século de fotografia Osasco, Maxprint Editora, 2007.

Never go back. Never go back.

But it s consistently behind, and well behind.

One year ago to this very day, I woke up.

There was someone recently, wasn't there? Just a couple weeks ago.

So I want you to think back a few months ago.

A lot of boys ran after the rabbit.

I saw a cat running after the dog.

There is a large garden at the back of his house.

Tom was hiding behind a bush.

A small pond is behind my house.

I almost died a year and a half ago.

Moving an image into place behind one hole would usually bring one or two others into place behind other holes.