Rod Speed wrote:
David P wrote
Why did they say we were overpopulated 50 years ago,
when the world pop was half of what it is now?

Because fools like Ehrlich were predicting the end
of civilisation as we know it. Fools like Malthus
had been doing that much earlier too.

They all got it wrong and we are doing fine with the
current population and will do in the future too.

The Yale researchers called for ZPG 50 years ago,
but the other scientists didn't chime in, because
they were afraid to "bite the hand that feeds them"
(they get so much of their bread & butter from
Government grants). The people weren't aware of
what the ZPG'ers were looking at, so they didn't
believe anything needed to be done; the politicians
knew that, so they just kicked the can down the road!