1. World Wildlife Fund. What is the sixth mass extinction and what can we do about it? https://www.worldwildlife.org/stories/what-is-the-sixth-mass-extinction-and-what-can-we-do-about-it#
2. Traffication
3. Smith R. “They paved paradise and put up a parking lot:” exactly what we’ve done. https://richardswsmith.wordpress.com/2023/06/19/they-paved-paradise-and-put-up-a-parking-lot-exactly-what-weve-done/
4. The Toll of the Automobile