Climate change is not a belief.
It is a
measurement.
Thermometers, oceans, ice, sea level, greenhouse gas physics and carbon chemistry all point to the same conclusion: the planet is warming, and human activity is the main cause.
Built for sceptics, not slogans.
Four short pages, one conclusion.
The case is split into separate pages so you can read it in any order. Start wherever your doubt is.
The evidence
Ten independent lines of evidence, from thermometers to carbon chemistry, and what each one does and does not prove.
Open the evidence board → Common argumentIs it just a natural cycle?
The most common objection. Earth does change naturally, so why is now different? Because the causes behind past changes are not present today.
Read the answer → ObjectionCommon arguments
Twelve sceptical arguments, each taken seriously: why it sounds plausible, the simple answer, and the bottom line.
See the arguments → TransparencySources
Do not take this site's word for it. The original sources from NASA, the IPCC, the Met Office and others.
Check the sources →The one-minute version
Climate change is real because separate measurements agree. Thermometers, satellites, oceans, ice, sea levels, greenhouse gas physics and carbon chemistry all point to the same conclusion. The planet is warming, and human greenhouse gas emissions are the main reason.