seems to correlate to the increase in average global temperature and it makes sense
Global warming is caused by increased CO2 in the atmosphere
Plants remove CO2 and turn it into sugar and other macromolecules - thereby cooling the planet
Vegans kill all our plants for food and clothes. This not only removes the means of reducing CO2 but when they metabolise the plant macromolecules they produce CO2. The effect of reducing the removal of CO2 and producing more CO2 doubly increases atmospheric CO2 and global warming.
The only way to save the planet is to eat vegans