Time frame. You mean Younger-Dryas or more recent? Or all of them?
Actually, from the little Ice Age, we've done remarkably well at advancing our technology and industry, even bombed it out of existence a few times (or shelled it) and keep coming back better, faster, more 'efficient'. The emissions from the start of the Industrial Revolution through today are being blamed for changing the climate, but it just might have been the warmer climate that spurred the need for more efficient crop harvesting, etc, and the industry to support that. So did the Industrial Revolution cause the climate or did the climate lead to the industrial revolution> or are they simply unrelated?
IMHO, the reason they greenies are fighting off-planet exploration is that they'd lose the monopolistic control leverage they have with the climate, unless, of course, they control access to space.
(They might also want to hedge their bets because anything that makes the surface colder just might have a catastrophic result.)