carbon

Which countries emit the most carbon dioxide depends on how you count. This ranking uses Global Carbon Project data for 2024 and compares annual territorial emissions, per-person emissions, emissions embedded in trade, and cumulative emissions since the industrial revolution.

San Marino reports about 1,570 registered vehicles per 1,000 residents, the United States about 875, and Italy leads the EU at 709 passenger cars. What the numbers count, why rankings shift with the definition, and how electric cars are changing fleets.