How to Choose our Future
Wednesday 25 March 2026 7.30pm (UK)
The Speaker: Halle Krieger
Halle is a PhD candidate and member of Prof Tim Lenton’s research group at the University of Exeter exploring tipping points in climate and society. She is studying how positive tipping points can drive rapid climate action. For her masters research (‘23), Halle identified early signals of an approaching tipping point in the UK automobile market from petrol-powered to electric vehicles, which she presented at the 2025 Global Tipping Points Conference.
Halle is especially interested in the collective processing of climate-related emotions (ie eco-anxiety) as a core condition for successful societal transformation. As a student experiencing these feelings herself, Halle is starting a dedicated space where students at Exeter can build emotional resilience as a foundation for communal action.
The Talk
Halle will introduce the concept of tipping points and explain why we need positive tipping points in the drive to reduce carbon emissions. She will give examples of where tipping is happening now in social norms and technology adoption.
Halle will invite you to take part in a simple online activity to demonstrate in a fun way how a new behaviour can become the norm.
Halle will use historical examples of sudden societal change and present-day data from electric vehicles and the rise of renewable energy. The talk illustrates how desirable transformation can move from apparently impossible to inevitable.
This talk will demonstrate that every decision you make, every behaviour you change really does count!
Speak up for our Planet 