Methane Cuts Could Prevent Climate-Driven Need Shortfalls

ETH Zurich researchers found current climate policies risk warming beyond 1.85°C without methane reductions, threatening basic needs affordability.

ETH Zurich researchers found that current national net-zero targets for carbon dioxide would cause peak global warming exceeding 1.85°C above pre-industrial levels without significant methane emission cuts. To limit warming to 1.7°C under a 2050 carbon dioxide net-zero scenario, global methane emissions must fall by at least 69% by 2050 compared to 2020 levels. However, only three countries—Japan, Mexico, and South Korea—specify methane mitigation targets in their national policies. The study uses a simplified climate model assuming linear emission reductions from 2020 to the net-zero year to project these outcomes.

This research directly impacts the affordability of basic needs. Warming above 1.7°C could trigger climate disasters that make food, water, shelter, and health services unaffordable for millions. Methane’s shorter atmospheric lifespan means cutting emissions now has a stronger immediate impact on preventing these cascading effects than longer-lived carbon dioxide reductions alone.

The next critical step is whether countries adopt methane reduction targets at scale. Current policy trajectories project methane emissions rising by 20% by 2050 relative to 2020 levels. Without rapid action, the 1.7°C target becomes unattainable. Important limitations include the study’s assumption of linear emission cuts and its focus on 2050 scenarios—real-world policy implementation may be non-linear, and post-2050 dynamics remain unmodeled. The source is a 2026 study in *Communications Earth & Environment* with specific model constraints that must be considered when assessing urgency.

Source: Carbon Brief