Climate Change is the largest challenge facing the world right now. Each year Skeptics on the Fringe has looked at different aspects of climate change, such public policy, or how to measure its impact. This year we've invited one of Edinburgh's PhD students to share with us her research into an unusual approach which may help us tackle it. Under extreme conditions, such as high temperatures or pressures, materials behave differently to how they do at the conditions we experience everyday. For example, graphite transforms into diamond, oxygen becomes a metal and water 'freezes' at room temperature. In this talk, you'll find out what happens when you you squeeze ice and gases to high pressures, and how this may help combat climate change. Mary-Ellen Donnelly is a final year physics PhD student at the Centre for Science at Extreme Conditions in the University of Edinburgh studying what happens when ice and hydrogen mixtures are squeezed to high pressures.

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