Just spitballing, you get these thoughts at 3am. I was born in 1951, population 2.6 Billion people. Today, 7.9B. Triple the amount. Body temperature is 37C. Adult body fluid is 50 litres. Radiating body heat is slowly heating the planet. Add to this the energy expended in cars, hot water heaters, computers, refrigerators, washing machines, public transport, heating, cooling, food preparation, etc. 7.9B people hold about 400 billion litres of water. Add to this water in storage tanks, cars, hot water heaters, air cons, fridges, warehouses of bottled water, drinks, beer, spirits, etc. The population is heating the planet and siphoning of the water in body and kind. The increase in carbon dioxide is not heating the planet, but is a measure of the heating of the planet.