An online meeting co-sponsored by the Royal Scottish Geographical Society and the Quaternary Research Association, celebrating the bicentenary of the birth of James Croll (1821-1890), a self-taught, stonemason’s son from Perthshire who became internationally celebrated as a proponent and developer of the astronomical theory of climate change with its implications for glaciation, oceanography and much else. Using a mixture of talks and videos, the meeting will explore Croll as a person and as a scientist, with specialists drawn from the worlds of science and history.