The end of the America we know? Startling new images show how major cities could look in 250 years

[Carlene]

The end of the America we know? Startling new images show how major cities could look in 250 years

As America celebrates its 250th birthday, startling new visions suggest the nation that turns 500 could be almost unrecognizable.
Source: The end of the America we know? Startling new images show how major cities could look in 250 years