What would you do if you invented a time machine? Would you travel back to the past to alter history or fix mistakes? Or would you rather jump forward, to collect future knowledge and bring back advanced technologies?

Led by the audience, these and other challenging questions were asked to two of Europe’s top experts on climate change and energy: Professor Nebojsa Nakicenovic, Chief Scientific Advisor to the European Commission, and Professor Peter Lund, co-chair of the SAPEA working group on Europe’s energy transition.

How did we get ourselves into such a mess with climate change? When and how did it all go wrong — and could we have done otherwise? What information about the future do we need to help guide our energy choices now? And how do today’s scientists model tomorrow’s world without the aid of a time machine? Listen to what the two experts said in response.

This event was part of Berlin Science 2021 and organised by SAPEA – Science Advice for Policy by European Academies.