what if all the water that has been evaporating into the atmosphere from the polar ice caps is not really, in fact, gone but is only displaced and is now residing in our atmosphere, ready to be rained down to the measure and intensity that we've melted the glaciers on the poles with global warming over the past 100 years.
Or perhaps better simplied, to get the point across : 100 million years of glaciers dissipated over 100 years = 100 million years of water displaced into the oceans through melting and into the atmosphere through evaporation that comes back on us over a type of automechanical earth process of re-balancing itself over another 100 year period.
Now, if the poles melt and the oceans raise, as well as great and increased storm strength and frequency (ie hurricane katrina to new orleans) ...... then we could see the sea reclaim many of the lowlands like new orleans, hawaii, etc.
Here at the equator we have what i would presume to be lowlands, full of marshes and waters and bogs and rain........ combined continual heavy rains with increased ocean sea level could cause, over time , the distinct separation of the two hemispheres. Where over time these waters would bring what are now the moderate northern and southern hemispheres under water or at sea level, with only the more southern and northern parts of the hemispheres remaining above water.
And if there's a big deal of water where the once hot equator lands used to lay, the excessive rains would probably keep the temperature down in the equator regions and and cause a chain reaction up and down the hemispheres. If the waters first reclaimed thin and low lands like Panama, they'd probably take large portions of central america as well as the tides continued to rise and the rains continued to fall.
People would push north and south in droves over a relatively short span of time-like a few generations, bringing disease , poverty, class wars, real wars, etc. The tumult in places where oceans like the Atlantic and Pacific Oceans meet would be incredible. Where Panama used to be could become the next Cape Horn.
The dispersion of the peoples of central america would have great effect on overpopulating areas in places like the southern united states and Mexico and northern south america. Where there are refugee camps, there are plagues. Where there are famines, there are deaths.
White americans would push north to Canada. But as they push north, the global warming trends have pushed south and now it's MEN whom the sun scorches and not ice glaciers.
The poles and the equator change roles. The equator is now frozen solid, the poles scorching hot. White man with fair skin become unfit for the conditions and can't evolve fast enough to stop the sun from killing them. Dark men freeze for poor conditions and little technological advancement. Their deforested forest areas are too few for their overpopulated people regions and don't give enough resources. People fight for scraps, die over logs, and eat eachother out of hunger.
Survivors will be few and maybe none.
the earth is a heavenly body and men are earthly. we're lower on the food chain.
it might not all happen exactly like that, but i could see something very similar to this happening in the not too distant future.