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

Tom died about a year ago.

That happened about three hours ago.

So this was launched about nine months ago.

So, it should have happened about 480,000 years ago.

About eight years ago, Billy Graham opened for me.

The country was originally settled around 3,000 years ago by migrants from the Philippines and sustained a Negrito population until around 900 years ago.

An early coastal migration along the south coast of Asia, leaving Africa around 60,000 years ago, reaching Australia very rapidly, by 50,000 years ago.

In cosmological terms, that was about 10 minutes ago.

The first felids emerged during the Oligocene, about 25 million years ago.

History The cultivation of the domesticated grape began 6,000 8,000 years ago in the Near East.

Moving along to a project that we finished about a year ago.

So, this is how I began, about 15 years ago.

And we only left Africa about 70,000 years ago.

About three and a half years ago I made a discovery.

About ten years ago, I took part in the publishing of a magazine called Front.

The region first became volcanically active around 3 4 million years ago, though volcanism on Thera began around 2 million years ago with the extrusion of dacitic lavas from vents around the Akrotiri.

All these fossils date from the Anisian Ladinian transition (about 237 million years ago).

The last ice age started roughly 120,000 years ago.

And then about a year and a half ago, Google actually acquired this company.

About three years ago, I read an article in the New York Times.

It was about 20 years ago, when I discovered free falling.

Didn't you know that he passed away about two years ago?

The last time I saw Tom was about a year ago.

And as you saw just about a month ago, Watson from IBM beat the two champions in Jeopardy.

We happen to get round to testing, let's say, Newton's Law of Gravity about 300 years ago.

About 15 years ago, I went to visit a friend in Hong Kong.

By about 12 mya they had evolved into the larger size of which we are familiar.

The larger B. latifrons appears to have died out by about 20,000 years ago.

Once again, Italy was the scene of battle between the Habsburgs and the French.

And then we posted this video to YouTube about a year and a half ago.

And believe me, I lived the same sad life until about three years ago.

I was talking about this stuff to some schoolteachers about a year ago.

H. habilis and H. gautengensis Homo habilis lived from about 2.8 to 1.4 Ma.

We followed Mary.

So about a hundred years ago, some scientists invented a stain that would stain cells.

Compare that to the airbag debate probably about 30 years behind.

Does it really lead to a single ancestor some 20, 25,000 years ago?

So, One Laptop Per Child was formed about a year and a half ago.

Evolution The modern thylacine first appeared about 4 million years ago.

It created a configuration of continents that would remain stable for hundreds of millions of years in the form of the continent Gondwana.

Compare that to the secondhand smoke debate probably about 20 years behind.

I never forget my first multicultural reading, in Harvard Square about 10 years ago.

We had full page advertisements, some 30 years, 25 years ago when this canal came.

I think it was bought for us around three years ago for a Christmas present.