The BBC ran an article this week quoting Harrison Schmitt in 1972, showing a picture he took, and comparing it to a recent picture. The point was to show how earth had changed due to global warming. The pictures didn’t show any such such thing, and Harrison Schmitt is a high profile climate skeptic.
How 50 years of climate change has changed the face of the ‘Blue Marble’ from space
“the areal extent of sea-ice in the Northern Hemisphere has varied about a constant climatological level but in 1972-1975 sea-ice extent was significantly less. ”
1990 IPCC Report