Our internationally renowned research addresses the challenges of environmental extremes on human function. We develop and evaluate interventions to influence health, occupational activity and sporting performance practice and policy. The public and government agencies have been informed how to undertake safe and effective exercise in environmental extremes from our research. We have informed Fire Service guidelines to improve health of staff exposed to severe heat. Our product testing developed the cooling CAERvest® that has saved lives. We have contributed to the English Institute of Sport’s heat-alleviation and altitude training strategies that support Olympic and Paralympic athletes to optimise sporting performance.