My thinking was focused on local pollution and environmental degradation through the sixties and into the seventies--with a clear moral twist:
It was the satellite information of the 1980's that led to the creation of an earth science group within NASA, and an international body called the IPCC. Here's how the science part developed from the NASA perspective:
Even though I was up to speed about global warming at least from the 80's, I didn't really grasp the problem until the IPCC studies-and I didn't really "get it" until Al Gore's Inconvenient truth powerpoint (that became a movie) and won him a Nobel Prize.
That's when I first saw what Greta sees today: virtually unchanged.
Makes me feel very sad.