1. European Floods Are Latest Sign of a Global Warming Crisis. The New York Times, 16 July 2021https://www.nytimes.com/2021/07/16/world/europe/germany-floods-climate-change.html
2. The Death Toll from Flooding in China Rises Sharply, to More Than 300. The New York Times, 2 August 2021https://www.nytimes.com/2021/08/02/world/asia/china-flooding-deaths.html
3. Climate Change 2021: The Physical Science Basis. Contribution of Working Group I to the Sixth Assessment Report of the Intergovernmental Panel on Climate Change,2021
4. Renewable Power Generation Costs in 2020; Abu Dhabi, United Arab Emirates, June 2021https://www.irena.org/publications/2021/Jun/Renewable-Power-Costs-in 2020
5. Jeremy Rifkin, The Earth Only Has a Razor Blade-Thin Amount of Time Left. The Kyunghyang Newspaper, 24 June 2021http://english.khan.co.kr/khan_art_view.html?artid=202106241843527&code=710100#c2b