Still think this is just about polar bears?
If you’re still not convinced, don’t take it from me. Take it from the insurance industry. In 2024, the British actuarial society — a group of people whose job it is to measure risk for a living — released a report projecting that at 2°C of warming, we’ll see two billion deaths. At 3°C? four billion. That’s half the population of the Earth.
Error
And this is not worst-case modelling. This is their baseline. This is what the people who insure your life, your business, your pension, believe is most likely to happen if we stay on our current course.
It gets worse. Because climate breakdown isn’t a one-off crisis — it triggers runaway feedback loops. Ice melts and reduces the planet’s ability to reflect sunlight, which makes it heat up faster.
Permafrost thaws and releases methane, a greenhouse gas 80 times more potent than CO₂. Forests burn and release carbon. Soils lose their ability to absorb emissions.
Everything begins to feed on itself. Even if we stopped all human emissions tomorrow, these systems may continue warming the planet — potentially beyond the point of recovery.
Most tipping points are estimated to be triggered between 1°C and 2°C. We are already at 1.6°C. We are now in the danger zone. There is no longer a buffer. There is no margin of error. This is happening in real time.
So what do we do?
Emergency
Well, the answer is no different from the cancer patient. Two things: stop making it worse, and start trying to repair the damage.
That means ending fossil fuel emissions as fast as humanly possible. That means scaling up emergency carbon removal. That means mobilising everything we’ve got.
Will it work? We don’t know. But what we do know is this: if we do nothing, billions will die. And not in some abstract future. In our lifetimes. In the lifetimes of our children.
This is not a problem for “someone else to solve.” This is your responsibility, your emergency, your world.
Edward Burtynsky – Manufactured Landscapes, a pyre waiting to burn.
Truth
And if you think you still have a choice — let me be blunt: you don’t. If your actions or inactions contribute to this collapse, you don’t just destroy your own future. You destroy the lives of everyone around you. You condemn entire generations to hell on Earth because you couldn’t face the truth.
It’s not just foolish. It’s not just selfish. It’s evil.
Let me speak personally for a moment. I’ve met hundreds of people who, after hearing this reality, decided to act. Ordinary people. Teachers, nurses, students, grandparents.
They quit their jobs. They faced arrest. Some went to prison. Not because they were heroes. But because they understood this one, simple thing: if we don’t fight, we die. If we don’t rise up, we burn.
You can’t half-commit to this. You can’t give a little donation, feel a bit guilty, and move on. Once you’ve heard the truth, you are accountable. And the only question left is what you’re going to do about it.
Act
So this is your moment. This is the turning point. If you’ve read this far, you already know. You know what’s coming. You know the scale of the crisis. You know the failure of our leaders.
You also know this: we are not powerless. There are millions of us waking up. Rising up. Organising. We are building the resistance that history will remember.
Join us.
Because history is watching. And your children will ask what you did. And one day, in the final hours of your life, you will ask yourself the same question.
Don’t wait for the flood. Don’t wait for the fire. We have no choice but to act. And act we will.
This Author
Roger Hallam is a founding member of Extinction Rebellion and Just Stop Oil and an activist with Umbrella. He is currently serving a five year prison sentence for participating in a online call discussing a climate action on the M25.