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Nature · Guess the stat

How well do you know the environment?

Guess the real numbers behind the environment, see how everyone else guessed, and get the source.

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About how many billion tons of greenhouse gases did the world emit in 2025, the highest ever recorded?

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Eco by the numbers

Real figures with their sources. All Eco facts →

China, 34.0%

In 2023 data, which country was the largest emitter of CO2, responsible for about 34% of the global total?

China's emissions alone now exceed those of the United States, India and Russia combined.

Source: Wikipedia, Greenhouse gas emissions (2023) en.wikipedia.org

about 4.9 tonnes per person

Average per-person carbon emissions worldwide are about how many tonnes a year, versus a Paris Agreement target of about 2.3 tonnes?

The average person's carbon footprint is currently more than double what's considered compatible with Paris Agreement goals.

Source: Wikipedia, Greenhouse gas emissions (2023) en.wikipedia.org

about 10 million hectares a year

Between 2015 and 2020, the world lost forest at a rate of about how many hectares a year?

Even though the pace of forest loss has slowed since the 1990s, tens of millions of hectares still disappear every year.

Source: Wikipedia, Deforestation (2020) en.wikipedia.org

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How does EcoSurvey.net work?

Each question asks you to guess a real number about the environment and ecology. After you answer you see how everyone else guessed, then the real figure and where it comes from.

How is the daily round scored?

Four stats and one opinion poll. A correct guess earns 100 points plus up to 50 for speed, with a combo bonus for answers in a row. The range next to the right answer earns 40. Opinion polls earn 25 for having your say, and nailing every stat adds 150.

Where do the numbers come from?

Every stat links to its source, such as government statistics agencies, research organizations and industry groups. Figures are checked against the source before they go live.

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