I am doing a graph on some high and low points of the aeroplane over time. I know it wasn’t very popular when it was first invented and that it became popular in the 1920′s, but that’s all I know. Anything else?

Is it possible to be an Airline pilot and a high school Earth Science teacher at the same time because I want to be both of those by majoring in aviation and minoring in Earth Science and I wanted to know if it’s hard to do.