OK... since Gary has set the tee, let's talk population. Per the Post-Gazette (if behind the paywall I'm sorry, I have no subscription myself, but it still seems to be letting me in??) If you can read it he sets up what appears to be a 4 week series looking back at Pittsburgh over 30 years. It starts, as it should, with people:
"The city of Pittsburgh, Allegheny County and metropolitan Pittsburgh area consistently lost population in every decennial census after 1960, with the 1980s serving as the greatest period for the depressing view of moving vans' tail lights."
posted by C. Briem at Sunday, October 06, 2013