Dr. Roberts explores the Sahel region of Africa and the connection between dry years, famine, and global climate change. Walter Orr Roberts informal series, "Provocations." Each issue consists of provocative comments related to scientific issues that mostly focus on weather, climate, the sun, or ... Show moreDr. Roberts explores the Sahel region of Africa and the connection between dry years, famine, and global climate change. Walter Orr Roberts informal series, "Provocations." Each issue consists of provocative comments related to scientific issues that mostly focus on weather, climate, the sun, or near space, with the aim of creating a forum for discussion. Show less
