World leaders and negotiators have convened in Brazil for COP30 to assess where the planet stands on climate change — and the picture is sobering. A new United Nations report finds global progress since last year has been minimal. If nations continue on their current trajectories, the world is on track to warm roughly 5°F above pre‑industrial levels by 2100 — a modest improvement from last year’s 5.5°F projection, but still far from limits scientists say are safe.
That gap matters because beyond certain thresholds the harms of warming escalate rapidly: heavier rainfall and more dangerous floods, stronger hurricanes, more severe heat waves, and ecosystems such as coral reefs that are unlikely to survive. The U.N. Environment Programme warns the planet is very likely to reach 1.5°C of warming within the next decade. To hold warming below worse levels, global emissions would need to fall about 55% by 2035 compared with 2019. Under current national pledges, emissions are only expected to drop about 12% by 2035.
The United States, historically one of the largest emitters, will be a central focus at COP30. The Trump administration is not sending high‑level officials to the talks and formally announced its intention to withdraw from the Paris Agreement, the 2015 deal aimed at limiting warming to about 1.5°C (2.7°F). While U.S. emissions have fallen in recent years as older coal plants close and wind and solar expand — with renewables now cheaper than many new fossil fuel plants — federal policy shifts are slowing the pace of reductions. Analysts had expected U.S. emissions to fall 38–56% by 2035; policy rollbacks and cancelled clean energy incentives now suggest reductions may be only 26–35%.
President Trump has publicly dismissed climate science and urged other nations to abandon what he calls “green energy” policies. At the same time, market trends are driving rapid growth in clean energy investment worldwide. China leads in manufacturing and deployment of renewable technologies, and more than 90% of new energy projects installed globally in 2024 were renewables. Energy economists say these market forces will continue to expand clean power and reduce emissions, but without stronger government commitments to phase down fossil fuel use, that decline is unlikely to be rapid enough to meet climate targets.
COP30 will test whether diplomacy, domestic policy shifts and market momentum can be aligned to close the gap between current promises and the deep, near‑term cuts scientists say are required. Negotiators face the task of translating intent into enforceable action before the window to avoid the worst impacts of climate change narrows further.