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Explore Global Trends for Free With Our World in Data

Readable charts are a starting point for questions, not a substitute for original data definitions.

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The aim is to help you complete one clear task, recognize what needs verification, and avoid the most common mistakes. Work through the checks in order, then use the real-world example to apply them to your situation.

Cost classification: Free resource (core access). Review the provider's current official terms before relying on an offer; separate core free functionality from optional upgrades, accounts, storage or third-party charges.

1. Start with a specific metric

Search for a subject such as life expectancy, energy use or literacy. Read the chart title carefully and decide whether it shows rates, totals, shares or modeled estimates.

2. Inspect the underlying source

Our World in Data aggregates material from many providers. Follow the source notes and definitions rather than treating every line chart as one uniform global measurement.

3. Use filters without distorting context

Compare the same period, countries and units. Pay attention to missing series and changes in source methodology. Record the chart URL and retrieval date.

4. Respect licenses and attribution

Some charts and site text have broad reuse permissions, but underlying datasets may carry separate licenses. Inspect each chart’s sources and licensing before embedding or redistributing.

Verify the source before acting

For the definitions, current capabilities or rules behind this topic, use the original source below. Features, eligibility, safety requirements and local laws can change. A guide cannot replace a provider's official instructions or qualified advice for a consequential decision.

Our World in Data

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