That is a MASSIVE amount of money and is the figure calculated to have been lost from the global economy since 1900. Talk about shock and awe: We're all doomed, we must do something!
But take out things that the Earth does and we have no control over; earthquakes and volcanoes, and it drops to about $58tn, or roughly $650bn a year. That is a big number, but a small percentage.
Give or take a few trillion dollars the global economy was £77tn in 2014 making the average "loss" about 0.8% pa. So the next time economists, bankers and politicians tell me that it is too expensive for us to clean up our act, or to invest in the technologies and lifestyle changes to help us heal the environment I am going to laugh in their faces.