- Overshoot: A Conceptual Review of Exceeding and Returning to Global Warming of 1.5°C. Once we exceed 1.5°C, is it all lost? Can we get back to it from above? What risks would that avoid, and which ones not? Great collaboration with a range of IPCC authors! www.annualreviews.org/content/jour...Apr 14, 2025 20:33