Carbon Budgets

Total emissions set the warming

An interactive lesson with 7 steps, about 6 minutes: you predict, drag and solve, with instant feedback on every answer. It runs in your browser and needs JavaScript.

What you’ll learn

• Warming tracks cumulative CO₂: about 0.45 °C per 1,000 Gt.
• Temperature limits imply finite carbon budgets.
• Reaching net zero stops further warming; delay steepens the cuts needed.

Steps

1. It’s the total that counts
2. The level in the bathtub
3. Warming so far
4. Fit the budget
5. Why stopping matters
6. Years left
7. Per person