Editorial: Climate change overshoot

Notes

• UNEP report 'Limiting Overshoot' highlights that breaching 1.5°C global warming causes irreversible losses.
• Current climate pledges put the world on track for 1.8°C warming; current policies suggest 2.6°C.
• The 1.5°C limit has already been breached; strong El Niño events (e.g., 2027) threaten further spikes.
• The 'overshoot, peak and decline' pathway involves exceeding 1.5°C temporarily before returning below it by century-end.
• Neutralising heating is significantly more difficult than preventing it.
• Methane is responsible for 0.5°C of current warming; reducing it is a key near-term mitigation strategy.
• Global Methane Pledge aims for 30% reduction in anthropogenic methane by 2030 from 2020 levels; over 155 countries have joined, excluding India.
• Developing economies emphasize historical carbon responsibility, the need for climate finance, and technology transfer.
• India faces a complex position: it is a victim of climate change with low per capita emissions, yet is increasingly viewed as a major emitter by smaller, vulnerable nations.

Part of a longer story

This is day 2 of 2 in UNEP report on global warming overshoot, which has been running since 3 September 2026. Reading it whole is usually worth more than reading today alone — the exam asks how something developed.

• UNEP pathway for global warming limit breach Before
• The whole story 2 entries