[pepsionice]

I hate to bring up this subject, but it kinda spells out global warming. Massive glaciers...probably ten times the size of what we have today...likely came to slowly melt over the years, and dumped the water which rose and covered Doggerland. Course, this global warming....wasn’t created by man, but simply a natural occurrence.

This all brings up an interesting subject....are we truly finished with global warming, or do we have more ground to cover with water? And what happens when the great glacier periods return? Do we suddenly find Cuba connected to the US landmass? Do we suddenly find a giant open parking lot existing between Orlando and New Orleans?

[Smokin' Joe]

Imagine the cities which may well have existed at the mouths of great river systems: The Potomac/Chesapeake, the Hudson, and the Mississippi, for a few. All under water and sediment on the continental shelf or eroded away by the advancing waves over time. Now think a little further back, to the days when the Missouri River ran north to the Arctic Ocean and wonder what remnants of civilizations might have been buried beneath the ice sheets' advance.

Has mankind's progress been linear? or have we repeatedly risen and fallen, the history lost to legend and then forgotten?

It is fun to ponder, but short of digging up such remnants we won't know.