Doom Mongers: the Quiz

Donna Laframboise (Canada)
Concern over climate change needs to be understood in its historical context. Activists, scientists, and politicians have been delivering ultimatums to the public for decades: stop what you’re doing, follow our advice, or humanity perishes.
Can you guess when the following proclamations were made?  ....................
...........There are many personality types out there. Some people need drama. They enjoy scaring the kiddies, denouncing sin, and threatening non-believers with hellfire and damnation. Life apparently isn’t rich enough for these souls; they need to imagine themselves participants in humanity’s “defining moment.”
But the most non-renewable resource of all is time – that finite portion allotted to each of us here on this dazzling blue and green sphere. Life is short. We mustn’t let the doom mongers and drama queens dominate too much of it."