Ice Age

The idea of an Ice Age was folk knowledge in the alpine regions of Europe. But between 1825 and 1833, German-Swiss geologist, Jean de Charpentier, collected evidence to support the concept and convinced American scientist, Louis Agassiz of the theory. Agassiz published it in his book Etude sur les glaciers (Study of Glaciers) of 1840 which proposed that the Earth was subjected to an Ice Age in the past.