theory, the theory of imprecise probability and info-gap theory. He applied the theory of imprecise probabilities to analyse tipping points in the Earth System. Alpinism Jim Hall has climbed new routes in Europe, North America, South America, the Himalayas and the Antarctic. He achieved the first ascent of South Face Thunder Mountain (Alaska) with Paul Ramsden and Nick Lewis, the first winter ascents of Cerro Poincenot and Aig Guillaumet and a winter ascent of Fitzroy Supercouloir (Patagonia) with Paul Ramsden, Nick Lewis and Andy Kirkpatrick, recounted in Kirkpatrick's book Psychovertical. Honours Prince Sultan Abdul Aziz International Prize for Water (2018). Fellow of the Royal Academy of Engineering (2010). Institution of Civil Engineers' Robert Alfred Carr Prize (2004). Institution of Civil Engineers' George Stephenson Medal (2001). Institution of Civil Engineers' Frederick Palmer Prize (2001). References British civil engineers Environmental engineers Alumni of the University of Bristol Academics of Newcastle University Academics of the University of Oxford Fellows of the Royal Academy of Engineering Living people 1968 births