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Our World in Data - Data Insights

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If the world is to reduce its carbon emissions and tackle climate change, it needs to move away from fossil fuels to low-carbon power.

There are two key sources of low-carbon electricity: renewables — which include solar, wind, hydropower and others — and nuclear power.

While rapid growth


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The United Nations’ International Poverty Line is an extremely low poverty line. Set at $3 per day, it draws attention to the living conditions of the poorest people on the planet.

In the chart above, you can see how the share below this poverty line has declined over the last generation. In the year 2000, 36% of the world’s population lived on less than $3 per day. In ...


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The HIV epidemic — which started in the early 1980s and progressed rapidly in the 1990s — has had lasting impacts that continue today. More than 800,000 people still die from HIV/AIDS every year.

But some countries were hit much harder than other...


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Religious compositions vary a lot from country to country.

In my own country, the United Kingdom, Christianity is the most popular, and following no religion is becoming increasingly common, particularly among young people. But I struggl...


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According to the latest data from the World Health Organization, the global death rate from malaria has almost halved since the year 2000.

The chart above puts this recent progress into a larger historical perspective. It combines the latest estimates from the WHO and the Institute for Health Metrics and Evaluation with those for the 20th century published by the late m...


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