Galen Halverson is a professor of geology at McGill University. He reads the history of our planet from ancient rocks in order to understand how the Earth system has behaved over billions of years. His current research focuses on tectonics, climate change and the evolution of ocean chemistry in deep time and the conditions under which complex life originated. Galen has spent extensive time conducting field research in the Arctic and in deserts across the globe. He also previously worked in the Weddell Sea investigating the sedimentary consequences of the progressive collapse of the Larsen Ice Shelf. He is keen to return to the region to bear witness the ongoing changes to this unique environment and to study the geological vestiges of the break of the Gondwana megacontinent. This will be Galen’s second expedition with us!