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 · Clinical trials
Which diseases get the most clinical trials?
The interactive chart needs JavaScript. The numbers are on the chart's page.
About 85,000 clinical trials registered on ClinicalTrials.gov as of November 2026 study cancer and other tumors, more than any other disease group; brain and nerve diseases come next with about 57,000. Groups are the National Library of Medicine's disease categories, and a trial counts in every group its conditions fall under, so the bars add up to more than the total.
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: ClinicalTrials.gov (U.S. National Library of Medicine), counted with its API v2 (Public domain (U.S. government work); source National Library of Medicine) · Data as of Nov 4, 2026
Open the chart and its numbersChart 2 of 2 · World
What is the unemployment rate in each country?
The interactive chart needs JavaScript. The numbers are on the chart's page.
In 2025, 4.2% of workers in the United States were unemployed, against 4.8% worldwide; the highest rate was 34.2% in Eswatini, and the lowest 0.1%, in Qatar. Search 182 countries and territories. These are the International Labour Organization's estimates, which count people without work who are looking for it and fill gaps where a country runs no regular survey, so they can differ from a country's own figures.
How to read this chart
Each bar is the share of a country's workers who have no job and are looking for one, estimated by the International Labour Organization. The dashed line is the world. People who aren't looking for work, such as students and retirees, aren't counted as unemployed at all.
Questions to discuss
- Is the United States above or below the world rate, and by about how many percentage points?
- A country can have low unemployment while many people earn very little. How is that possible?
- Why would someone who has given up looking for work not count as unemployed? Does that make the number more or less useful?
Source: World Bank, World Development Indicators: Unemployment, total (% of total labor force) (modeled ILO estimate) (CC BY 4.0 (credit the World Bank)) · Data as of Dec 31, 2025
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