Eric Walker added Billions Could Live in Extreme Heat Zones Within Decades, Study Finds - The New York Times to 2020-05 Future of the human climate niche and Sahara

Eric Walker added Billions Could Live in Extreme Heat Zones Within Decades, Study Finds - The New York Times to Sahara, and added Sahara to Africa

Eric Walker added a number of topics and a number of links to Africa, and added Africa to Continents