James Croll
James Croll, FRS, (2 January 1821 – 15 December 1890) was a Scottish scientist who developed a theory of climate variability based on changes in the Earth's orbit. == Life == James Croll was born in 1821 on the farm of Little Whitefield, near Wolfhill in Perthshire, Scotland, the son of David Croll, mason, and his wife Janet Geddes.