Fifty years ago, on this day, April 19, 1973, the first Hollywood film to mention global warming was released… 1973 Soylent Green released http://en.wikipedia.org/wiki/Soylent_Green The amount of carbon dioxide in the air was roughly 331.5ppm. As of 2023 it is 420ppm, but check here for daily measures. The context was Harry “Stainless Steel Rat” Harrison […]