Professor Smithey: Carbon charge no alternative to divestment
https://swatmountainjustice.wordpress.com/2016/03/13/carbon-charge-no-alternative-to-divestment/
https://www.swarthmore.edu/news-events/swarthmore-implements-carbon-charge-current-budget-year
Good illustration! https://www.gridphilly.com/blog-home/2016/5/4/swarthmore-divestment