Chart assignment
Charts to read and discuss
Read each chart, then answer its questions. Every chart shows its source and date; open it for a table of the numbers and the data to download.
Chart 1 of 2 · College football
How many college football games are decided by one score?
The interactive chart needs JavaScript. The numbers are on the chart's page.
36.6% of regular-season games between two FBS (top-division) teams in 2025 were decided by 8 points or fewer, what a touchdown and a two-point conversion can make up. About one game in three has been that close in most seasons since the 1940s; the closest seasons were the low-scoring 1930s, peaking at 49.4% in 1937. Ties count as close games. The chart starts in 1900; CollegeFootballData.com's records before then cover only a few dozen such games a season.
Questions to discuss
- In one sentence of your own, what does this chart show?
- Find the biggest change or difference in the chart. What might explain it?
- Who collected these numbers, and how recent are they? What else would you want to know before drawing a conclusion?
Source: CollegeFootballData.com, college football games (CollegeFootballData.com terms of use (factual data, credited to CollegeFootballData.com)) · Data as of Jan 20, 2026
Open the chart and its numbersChart 2 of 2 · World
How much carbon dioxide does each country emit per person?
The interactive chart needs JavaScript. The numbers are on the chart's page.
In 2024, people in the United States emitted 13.6 tonnes of carbon dioxide each, in China 9.3 and in India 2.2, against 4.7 worldwide. The highest figure was 82.8 tonnes in Palau, then Qatar (47.3) and Bahrain (23.9). Search 203 countries and territories. The figures count carbon dioxide from burning fuel, industry and other sources, but not from changes in land use such as cutting forests; in a small country, a few power plants, refineries or fuel sales spread over few people can make the figure very high.
How to read this chart
Each bar is the carbon dioxide a country put into the air in a year, divided by its population, in tonnes per person. The dashed line is the world. A country can emit a lot in total but little per person if it has many people, and a tiny country with a refinery or power plant can top the list.
Questions to discuss
- Compare the United States, China and India. Which emits the most per person, and is that the one that emits the most in total?
- Why might some small countries have the highest figures on the chart?
- Which seems fairer for comparing countries' share of the blame for climate change, total emissions or emissions per person? Why?
Source: World Bank, World Development Indicators: Carbon dioxide (CO2) emissions excluding LULUCF per capita (t CO2e/capita) (CC BY 4.0 (credit the World Bank)) · Data as of Dec 31, 2024
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