Holding the line: 1.5°C, overshoot, and the urgency of now
23 Sept 2025 | |
15:00 - 17:00 EDT | |
Scandinavia House, 58 Park Ave, New York, NY 10016, USA |
With global temperatures now brushing dangerously close to the 1.5°C limit set out in the Paris Agreement, this session at New York Climate Week asks: what will it take – scientifically, legally, financially, and politically – to keep 1.5°C alive? Join us to discuss the deep systemic changes needed to bring warming down in line with the Paris Agreement’s long-term goals.
Share

Join us at our New York Climate Week event where Climate Analytics' CEO Bill Hare will deliver a keynote and Dr Piers Forster, Director of the Priestley Centre for Climate Futures at the University of Leeds, will present on the latest science of 1.5°C.
This will be followed by a panel discussion of leading scientists, policymakers, and advocates on how science will impact our politics and capital flows, how the ICJ’s opinion may reshape national plans, fossil-fuel policy, and what support do SIDS and other vulnerable states require at this critical juncture? Stay with us for our reception with snacks and drinks provided.
The science is clear: while we have not yet crossed the 1.5°C limit – defined as a 20-year average – the window to avoid substantial overshoot is rapidly closing. Without deep emissions reductions by 2030, peak warming could exceed 1.6–1.8°C, heightening the risk of triggering dangerous tipping points and further entrenching inequity for the most vulnerable countries and communities.
Yet the door is not closed. There remains a narrow but critical opportunity to course-correct. To remain as close as possible to the 1.5 °C limit, emissions must fall by roughly 45–50% by 2030, reaching net-zero around 2050.
Join us to discuss the deep systemic changes needed to bring warming down in line with the Paris Agreement’s long-term goals.
The event will also be livestreamed on our YouTube channel.