Probably helped that they weren't telling you that polar bears would die and that Manhattan would be flooded under 30' of sea water if you didn't figure what you could do right there, right then, to send a rocket to the moon.
That was just the media who, among other things were telling folks that the Moon would turn to blood, change our tides, slow our rotation around the sun...
But then again, the ice caps are melting. That is sorta visible. And the water level is rising. That is sorta measurable.
You might want to see what is going on in Venice Italy, or NYC regarding that rising water. London is having the same issues. High tides are higher, Holland is also getting a first hand look at the changes [of course I still wonder about a country that builds under the previous sea level]
A couple of years ago with 4 inches of rain the NYC subway system was flooded up in the Harlem/Columbia U area where the Hudson Line meets Manhattan. "How could so little rain cause this?????" was the question that everyone asked. I was on the Hudson Line from Westchester to Midtown so I got the full experience that day.
Turns out that subtle little rise in the sea level also raised the water table that normally accommodated the runoff and kept the water out of the flow of the tracks.
They are now pouring in millions in new pumping equipment to start addressing the problems that are already happening and that are increasing yearly.
Also, the nice little hotel in which I spent my honeymoon in 1990 which had a lovely 150 foot walk to the water is now a simple 30 ft walk to the water. The owner expects it to be in existence for about 10 more years.