Explainers
Climate change, explained
The big questions, answered with data and the latest science — every claim linked to its source.
Your lifetime
How much has the world warmed since you were born?
Enter your birth year: your warming, CO₂, Arctic ice, sea level and your own warming stripes.
The evidence
Is climate change real? The evidence in 6 charts
Temperature, CO₂, attribution, ice and sea level — straight from the agencies that measure them.
1.5 °C
What does 1.5 °C of warming actually mean?
Have we crossed it, and how much worse is 2 °C for heat, reefs, ice and species?
Tipping points
Climate tipping points: which are we closest to?
Thresholds for Greenland, the Amazon, the AMOC and coral reefs — and the first one crossed.
Extreme heat
Where will it be too hot? Extreme heat map to 2100
Maps of dangerous heat days today, in 2050 and 2090 — and where Sahara-like heat spreads.
Before and after
Climate change before and after: satellite images
An ice shelf gone in a month, vanishing glaciers and a draining reservoir — seen from space.
2050
What will the world look like in 2050?
The IPCC's scenarios for mid-century: heat, seas, Arctic ice, migration and health.