Dr. Roberts explores the volcanic eruption of Laki, Iceland, in 1783 as well as other volcanic eruptions. 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... Show moreDr. Roberts explores the volcanic eruption of Laki, Iceland, in 1783 as well as other volcanic eruptions. 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