The overgrown city
My son raised this point - otherwise it might have passed me by. He asked why - in these post apocalyptic films - do they always show buildings overgrown with vegitation when buildings we see day by day that are never touched by anyone do not get vegitation on them?
The boy looked about 10 years old so we are saying that in just 10 years a large city would have vegitation growing up and over large buildings - really?
So does anyone have any real information on how long it might take for such extreme encroachment of nature to take place?