Three paths to pull the planet back below 1.5°C

Last year, global temperatures crossed a line that shouldn't have been crossed: averaging more than 1.5°C above pre-industrial levels for the first time. That margin we were supposed to protect under the Paris Agreement? It's gone. The negotiators heading to COP30 in Belém have almost no room left to work with.

The hard part: you can't solve this by just switching off fossil fuels. That's necessary, but it's not enough. Think of the climate system like a pressure cooker with three valves releasing heat. You can turn down the flame under the stove, but if the other two valves keep hissing steam, the whole thing still explodes. That's where we are.

The three valves that need closing

The first is energy. Yes, renewable power needs to triple by 2030 — that's the scale we're talking about. But it's not just about solar panels and wind turbines. Countries need to commit to phasing out coal without loopholes, kill off the fossil fuel subsidies that still pump billions into oil and gas, and actually fund the grid upgrades, battery storage, and transmission lines that make clean energy work. This isn't abstract policy. It means jobs in solar installation in India, grid technicians in Kenya, manufacturing hubs in Brazil. It means communities get reliable electricity and energy security, which builds the kind of trust governments need to push harder on climate.

The second valve is land. Forests, mangroves, seagrass beds — these are the planet's carbon storage. We're still losing them. A time-bound commitment to zero deforestation isn't poetic; it's mathematical. Every forest that stays standing is carbon that doesn't get released, and carbon that keeps being absorbed. The Amazon, the Congo Basin, Southeast Asia's remaining rainforests — they're not just beautiful. They're infrastructure. Critical infrastructure.

The third is nature-based carbon capture. Beyond just stopping the bleeding, we need to actively rebuild what's been lost. Restore mangrove forests along coastlines, let seagrass meadows expand, rewet peatlands. These systems pull carbon directly from the air and lock it away. They're slower than a solar farm, but they're also creating habitat, stabilizing coastlines, and giving communities new ways to earn from living ecosystems instead of destroying them.

The trap is thinking you can pick one. Countries sometimes want to lean hard on renewable energy and call it done. Or protect forests while still burning coal. Or talk about nature restoration while subsidizing deforestation somewhere else. It doesn't work. The pressure builds. You need all three moving at once, with the same urgency, backed by the same money and political will.

COP30 has to deliver something that looks like a real plan across all three. Not a wish list. Not a pledge that gets quietly forgotten in five years. Actual sector-by-sector targets, actual finance commitments, actual timelines. Because 1.5°C isn't some abstract number climate scientists care about. It's the difference between a world that's difficult and a world that's genuinely chaotic.