Earth Overshoot Day was yesterday

I gave a lecture on human population yesterday and showed some of the videos I included in A very late celebration of World Population Day. At the end of the lecture, one of my students asked if I did that because it was Earth Overshoot Day. I said no, I would have given that lecture that day no matter what. It turned out to be a happy coincidence. Now I'll have to remember to check for Earth Overshoot Day in the future to observe it at my main blog.