Even this NASA map here seems to be showing that the earth was on average getting colder every year for almost 100 years (from 1884 to around 1970): https://cl

Even this NASA map here seems to be showing that the earth was on average getting colder every year for almost 100 years (from 1884 to around 1970): https://climate.nasa.gov/interactives/climate-time-machine https://climate.nasa.gov/interactives/climate-time-machine ^ Note that the blue and red areas represent not the temperature in absolute terms, but the change of temperature each year. The amount of blue between 1884 and 1970 would look alarming and frightening if it was replaced with the color red... It's not surprising that some scientists were concerned with global cooling. If the cold trend had continued, today we'd be worried about the 'Fridge effect' instead of the 'Greenhouse effect'. People will always speculate to create fear to get attention and power and money. Also popular charts like this: https://en.wikipedia.org/wiki/File:2000_Year_Temperature_Comparison.png https://en.wikipedia.org/wiki/File:2000_Year_Temperature_Com... don't show the temperature, but the change of temperature (draw a horizontal line where the 0 point is). So yes, for 1900 years until only about 100 years ago, the earth has been getting cooler every single year. So the earth has never been so cold as it has been in the past few decades. In our increasingly secular society, certain lesser fields of science have taken the place to religion when it comes to the business of manufacturing fear and selling solutions. There has always been a market for this and probably always will be.