Exploration Insights Great Geos ebook | Page 94

94 | Great Geologists Temperature and greenhouse gas records from the Vostok ice core from Antarctica display variations in keeping with Milankovitch cyclicity and correspond to phases of polar ice sheet growth and decline. into one volume Milanković began work on his “Canon of Insolation of the Earth and Its Application to the Problem of the Ice Ages”, which covered his nearly three decades of research, and summarized the universal laws through which it was possible to explain cyclical climate change and attendant ice ages. Milanković spent two years arranging and writing the “Canon”. The manuscript was submitted to print on 2 April 1941 – four days before the attack of Nazi Germany and its allies on the Kingdom of Yugoslavia. In the bombing of Belgrade on 6 April 1941, the printing house where his work was being printed was destroyed; fortunately a printed copy of the manuscript had already been transferred to the printer’s warehouse. After the successful occupation of Serbia on 15 May 1941, two German officers with backgrounds in geology visited Milanković. He gave them the only complete printed copy of the “Canon” for safekeeping in the University of Freiburg. The book was eventually published by the Royal Serbian Academy in German as “Kanon der Erdbestrahlung und seine Anwendung auf das Eiszeitenproblem”, a landmark in paleoclimate studies. During the German occupation of Serbia from 1941 to 1944, Milanković withdrew from public life and decided to write a personal history going beyond scientific matters. This autobiography was published after the war, entitled “Recollection, Experiences and Vision” in Belgrade in 1952. Milanković had a long-standing interest in popularising science. Between 1925 and 1928 Milanković wrote Through Distant Worlds and Times in the form of a series of letters to an anonymous woman. The work discusses the history of astronomy, climatology and science via a series of imaginary visits to various points in space and time by the author and his unnamed companion, encompassing the formation of the Earth, past civilizations, famous ancient and renaissance thinkers and their achievements, and the work of his contemporaries. In the “letters”, Milanković expanded on some of his own theories on astronomy and climatology, and described the complicated problems of celestial mechanics in a simplified manner. After the Second World War he began publishing numerous books on the history of science, including Isaac Newton and Newton’s Principia (1946), The Founders of the Natural Sciences: Pythagoras – Democritus – Aristotle – Archimedes (1947) and Techniques in the Ancient Times (1955). Milanković suffered a stroke and died in Belgrade in 1958. He is buried in his family cemetery in Dalj. His work has left a profound legacy for Earth sciences. Not only can it be used to explain some of the key driving mechanisms of climate change in the geological past, but Milankovitch cyclicity is increasingly recognised through its visible expression in the rock record. For example, the origin of rhythmically bedded successions, such as the Early Jurassic open marine limestones and marls of southern