2025 ranks third-warmest year at 1.47°C above pre-industrial levels, marking first three-year average exceeding 1.5°C as exceptional heat persists globally.

Earth's oceans hit record heat in 2025 for the 9th straight year, accelerating planetary warming and fueling extreme weather impacts worldwide.

Southern Ocean freshening has strengthened stratification since the 1990s, trapping CO₂-rich deep waters 40m shallower below surface—temporarily buffering carbon sink weakening.

Climate impacts originating outside Europe cascade across borders through interconnected systems of water, agriculture, livelihoods, and conflict.

Glaciers currently warm more slowly than their surroundings, but new research shows this cooling effect will collapse as glaciers shrink, triggering nonlinear feedbacks and accelerating melt after midcentury.

A 2025 study reveals Arctic wildland fires now delay snow cover formation by over 5 days through surface darkening and warming effects.

Climate-driven wildfires, pest outbreaks, and storms could double Europe's forestry losses from €115 billion to €247 billion under severe warming.

With 22 of 34 planetary indicators at record levels and warming accelerating beyond model predictions, scientists warn the window to prevent catastrophic outcomes is rapidly closing.

WMO's 2025 climate update reveals record greenhouse gases, historic glacier loss, and accelerating ocean warming as extreme weather devastates communities globally.

A comprehensive 2025 synthesis of climate research reveals global warming may be accelerating beyond projections.

A 2025 study reveals climate change is now causing over 31,000 deaths annually based on rigorous attribution science, with economic losses exceeding $99 billion per year—yet research remains heavily biased toward wealthy nations.

New physics-based warning signal derived from surface ocean measurements successfully predicts AMOC tipping across multiple climate models.

Deep convection collapse in northern Atlantic precedes circulation shutdown in 70% of high-emission scenarios—reducing ocean heat transport to 20-40% of current levels and potentially triggering severe European cooling.

Ocean absorbed 10% less CO₂ than expected in 2023 despite El Niño conditions that typically strengthen the sink—revealing unprecedented extratropical warming effects that overwhelmed tropical patterns.

Planetary Health Check 2025 finds 7 of 9 boundaries breached—ocean acidification crossed for first time, warning of rising tipping-point risks.

Deforestation-induced warming exposes 345 million people to dangerous heat levels, causing significant mortality burden across tropics—with Southeast Asia bearing the highest per-capita death rates from forest loss.

Scientists emerge as most trusted climate information source across Global South, but climate action drops in priority when policy trade-offs are introduced.

Climate change drives a dramatic shift in tropical cyclone cluster patterns: North Atlantic emerges as new global hotspot, surpassing western North Pacific—threatening coastal communities with compound storm hazards.

Antarctic diatoms down ~33% on shelves as sea ice collapses; cryptophytes surge—threatening krill and weakening the Southern Ocean carbon sink.

New analysis argues ECS ~4.5 °C and stronger past aerosol cooling, explaining recent heat surge and raising urgency for faster climate action.