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This briefing by Zero Carbon Analytics examines the concept of 'temperature overshoot'—where global warming exceeds 1.5°C to 2°C before returning to those levels—and the associated risks of triggering irreversible climate tipping points. It argues that while the chance of limiting warming to 1.5°C by 2100 is now 'virtually zero', minimizing the magnitude and duration of overshoot is critical to avoid catastrophic Earth system collapses. The document contrasts dangerous climate tipping points with 'positive socio-economic tipping points' that can accelerate decarbonization, while warning that reliance on carbon dioxide removal (CDR) and geoengineering introduces severe risks and does not replace the need for immediate, deep emissions cuts.