Climate models have revolutionised our understanding of the world. Julia Slingo, Met Office Chief Scientist and High Level Group Scientific Advisor to the European Commission, examines the processes which control the climate system and how they are encapsulated in models. Watch the Q&A here: https://youtu.be/8kk96tTcdJo Subscribe for regular science videos: http://bit.ly/RiSubscRibe Climate change is arguably one of the greatest challenges that human civilisation will face in the 21st century. We may be taking the planet into uncharted territory, so how can climate science help us to navigate the challenges ahead? Dame Julia Slingo is the Met Office Chief Scientist and has responsibility for its scientific research and development. She is also visiting professor at the Unviersity of Reading's Department of Meteorology. In 2015, Julia Slingo was appointed one of the seven members of the High Level Group of Scientific Advisors of the European Commission Scientific Advice Mechanism. Subscribe for regular science videos: http://bit.ly/RiSubscRibe The Ri is on Twitter: http://twitter.com/ri_science and Facebook: http://www.facebook.com/royalinstitution and Tumblr: http://ri-science.tumblr.com/ Our editorial policy: http://www.rigb.org/home/editorial-policy Subscribe for the latest science videos: http://bit.ly/RiNewsletter