30 countries questioned in all 5 continents, representing 2/3 of the world’s population.
Survey conducted in Australia, Belgium, Brazil, Canada, Chile, China, Colombia, Egypt, France, Germany, India, Indonesia, Italy, Japan, Mexico, Morocco, Nigeria, Norway, Poland, Russia, Saudi Arabia, Singapore, South Africa, South Korea, Spain, Sweden, Turkey, United Arab Emirates, United Kingdom, USA.
Selection of countries mainly based on their CO₂ emissions per year, but also based on their geographic location or exemplariness in fighting climate change.
Total sample of 24 001 individuals, composed of 30 representative samples of the population aged 16 and over in each country.
The representativeness was insured using a quota method. Quotas used : gender, age, region, occupation, city size 500 or 1,000 individuals interrogated in each country.
Fieldwork executed by Internet (PC, tablet or mobile phone) between 30th August and 26th September 2022.
| Sample | Sample | Sample | |||
| Australia | 1,000 | Belgium | 1,000 | Brazil | 1,000 |
| Canada | 1,000 | Chile | 1,000 | China | 1,000 |
| Colombia | 500 | Egypt | 500 | France | 1,000 |
| Germany | 1,000 | India | 1,000 | Indonesia | 500 |
| Italy | 1,000 | Japan | 1,000 | Mexico | 500 |
| Morocco | 500 | Nigeria | 500 | Norway | 500 |
| Poland | 500 | Russia | 1,000 | Singapore | 500 |
| Spain | 1,000 | Saudi Arabia | 500 | South Africa | 1,000 |
| South Korea | 1,000 | Sweden | 500 | Turkey | 1,001 |
| United Arab Emirates | 500 | United Kingdom | 1,000 | United States | 1,000 |