I wonder if there might have been a glacial dam involved in cutting the English Channel.
In the northwestern U.S., during the ice age, a glacial dam in Montana created a lake the size of Lake Superior. When this dam gave way, a terrible flood flowed through eastern Washington to the Pacific, carrying huge boulders and gouging the land. Over the millennia, there were several such glacial dams and collapses.

Michael, Boulder, CO

i see i came to the wrong place for that famous british wit.

rno, nyc, us

Can't help thinking a few maps would have helped here

John Ledbury, Kings Lynn, England

So what's new now ??????

Taher, Damascus,

I think a 4x4 must have driven across this dam.....

Phil, Preston,

Bet it was Global Warming that caused the dam to fail?

Bry Barnes, Somerset, Uk

In answer to Bill McCann's question, almost certainly beavers.

Deejay, Reading, UK

i agree with david, this is very old news...

Satyam, Basingstoke,

Then that Greek who said water was the basic element was rigth, and it's water that's behind the Brits eccentricity.

Eugene, Heidelberg, germany

And you cannot change the course of history - this is PART of the course of history

Bill McCann, Suzhou, China

A dam is a man-made structure - who built this one?

Bill McCann, Suzhou, China

I seem to recall that there is a volcanic island somewhere in the Canaries (or off the coast of West Africa) which is ready to erupt, split in two and cause an even larger tsunami - which would of course reach our shores as well as travelling at great speed across the Atlantic and wreaking havoc there. This is a far greater threat than so called 'global warming' ever will be and could cause far greater damage in a much shorter time. Then there's Yellowstone.....

So why worry about what happened 700,000 years ago, if we're all doomed anyway ?

Bob Blackman, Fareham , Hampshire UK

I wonder who the enviromentalist would be blaming for this climate change if they had been around at the time.

Jaun, Ashton under Lyne, Lancashire

How is this news?

I was told this in primary school decades ago.

David, Manchester, UK

“It might never have happened and Britain would have gone through history always joined to Europe.”

That is absolutely unimagineable, isn't it? How different the entire world would have been...

Erik, The Hague, Netherlands

Atlantis? It is beyond the Pillars of Hercules and may have passed into an oral tradition that became legend. Just a suggestion for academic research aka an excuse for a grant.

Bill, Belfast, N.I.