2022 https://books.google.com.au/books?id=LaKIEAAAQBAJ&dq=Planet+in+Peril:+Humanity%27s+Four+Greatest+Challenges+and+How+We+Can+Overcome+Them&lr=&source=gbs_navlinks_s Book
2022 https://books.google.com.au/books?id=LaKIEAAAQBAJ&dq=Planet+in+Peril:+Humanity%27s+Four+Greatest+Challenges+and+How+We+Can+Overcome+Them&lr=&source=gbs_navlinks_s Book