About Carbonle

Carbonle is a daily puzzle about the carbon footprint of ordinary things. Five items, dragged into order from lightest to heaviest. Get it or don't — either way you walk off knowing the real numbers and where they came from.

Most of us read CO₂ figures every day and feel nothing, because a gram, a kilo and a tonne all blur together. Thirty seconds of dragging fixes that faster than any chart.

Every number is cited on its own page. If you want the receipts, the methodology and sources have them.