Enjoying our lectures? Please take a minute to answer 4 questions to tell us what you think! https://app.sli.do/event/1JonWUnuRtwjjMgcBM7LDQ/live/polls The impacts of climate change that probably worry people the most are irreversible changes that affect the entire world, such as a collapse of the west Antarctic ice sheet, shutdown of the global thermohaline circulation, loss of the Amazon biome, or a melting of Arctic permafrost. Sudden, unpredictable and irreversible changes can happen in response to a gradual warming. What is known about these risks at 1.5°C, 2°C and higher levels of warming? This lecture was recorded by Myles Allen on 5th March 2024 at Barnard's Inn Hall, London Myles is the Frank Jackson Foundation Professor of the Environment. He has contributed extensively to the Intergovernmental Panel on Climate Change (IPCC), including as Coordinating Lead Author for the 2018 IPCC Special Report on Global Warming of 1.5°C. He has published extensively on how human and natural influences on climate contribute to observed climate change and extreme weather risk, and the implications for adaptation and mitigation policy. The transcript and downloadable versions of the lecture are available from the Gresham College website: https://www.gresham.ac.uk/watch-now/tipping-points Gresham College has offered free public lectures for over 400 years, thanks to the generosity of our supporters. There are currently over 2,500 lectures free to access. We believe that everyone should have the opportunity to learn from some of the greatest minds. To support Gresham's mission, please consider making a donation: https://gresham.ac.uk/support/ Website: https://gresham.ac.uk/ Twitter: https://twitter.com/greshamcollege Facebook: https://facebook.com/greshamcollege Instagram: https://instagram.com/greshamcollege