Men often dominate the annals of exploration in Antarctica and Space. The pervasiveness of heroic white masculine leadership and exploration at the ends of the Earth and beyond, as well as more generally in Science, Technology, Engineering, Mathematics, and Medicine (STEMM) research cultures, has meant that women and other historically excluded groups have had less access to research and remote fieldwork opportunities. For instance, although women are becoming more visible in Antarctica, they comprise only 25% of Australia’s expeditioners. Similarly, almost 90% of astronauts worldwide have been men. This session explores what the most extreme environments in the world can tell us about making STEMM workplaces more diverse and inclusive.