Explore causes of death data for all countries, spanning more than four decades.<br><br><a href="https://ourworldindata.org/what-do-people-die-from-in-different-countries"><img src="https://ourworldindata.org/cdn-cgi/imagedelivery/qLq-8BTgXU8yG0N6HnOy8g/b18a3db6-93e7-4e72-3afa-ffae811d6800/w=1024"/></a>

Batteries have become much cheaper, making energy storage far more affordable.<br><br><a href="https://ourworldindata.org/battery-price-decline"><img src="https://ourworldindata.org/cdn-cgi/imagedelivery/qLq-8BTgXU8yG0N6HnOy8g/b0c1ea71-b663-4741-6574-67ffa449fe00/w=1024"/></a>

Romania’s history offers a rare natural experiment on what happens when abortion laws change rapidly. What can the rest of the world learn from this?<br><br><a href="https://ourworldindata.org/the-human-cost-of-unsafe-abortions"><img src="https://ourworldindata.org/cdn-cgi/imagedelivery/qLq-8BTgXU8yG0N6HnOy8g/f022345d-6fae-4d0e-f408-54a324b62200/w=1024"/></a>

Improving waste management in low- and middle-income countries could cut global pollution by 98%.<br><br><a href="https://ourworldindata.org/why-cheap-waste-management-is-key-to-stopping-plastic-pollution"><img src="https://ourworldindata.org/cdn-cgi/imagedelivery/qLq-8BTgXU8yG0N6HnOy8g/c405c34f-0816-4c07-c075-b259ab55ed00/w=1024"/></a>

Deaths from other animals are mostly caused by just two types: mosquitoes and snakes.<br><br><a href="https://ourworldindata.org/deadliest-animals"><img src="https://ourworldindata.org/cdn-cgi/imagedelivery/qLq-8BTgXU8yG0N6HnOy8g/ff4b0c82-f048-4f76-f5d8-fba6a57d6000/w=1024"/></a>

Almost all countries have ended large-scale forced labor, often surprisingly recently.<br><br><a href="https://ourworldindata.org/slavery"><img src="https://ourworldindata.org/cdn-cgi/imagedelivery/qLq-8BTgXU8yG0N6HnOy8g/fd9c3fb5-e863-48e5-d6df-a67fbf9e5000/w=1024"/></a>

Billions of people have access to far less electricity per day than is required to run an air conditioner for just one hour.<br><br><a href="https://ourworldindata.org/four-minutes-of-air-conditioning"><img src="https://ourworldindata.org/cdn-cgi/imagedelivery/qLq-8BTgXU8yG0N6HnOy8g/d666d8d8-6937-495b-5e37-ae8d93cc0a00/w=1024"/></a>

What share of the world is religious, and how is this changing? Explore global data and research on trends in religiosity.<br><br><a href="https://ourworldindata.org/religion"><img src="https://ourworldindata.org/cdn-cgi/imagedelivery/qLq-8BTgXU8yG0N6HnOy8g/d55e9c17-481a-4aab-81f7-3ee627dce800/w=1024"/></a>

To fuel all of the world’s aviation demand, global biofuels would need to more than triple and be exclusively used for air travel.<br><br><a href="https://ourworldindata.org/biofuels-demand-global-aviation"><img src="https://ourworldindata.org/cdn-cgi/imagedelivery/qLq-8BTgXU8yG0N6HnOy8g/419676cb-a931-41ff-3fde-d93748a5e900/w=1024"/></a>

Both violent and property crime are far below their 1990s peak, but some crimes see periodic rises.<br><br><a href="https://ourworldindata.org/us-crime-rates"><img src="https://ourworldindata.org/cdn-cgi/imagedelivery/qLq-8BTgXU8yG0N6HnOy8g/ad8c75ab-b3e2-4325-b53e-cf62e26f2600/w=1024"/></a>

How much bioenergy does the world produce, and what is it used for?<br><br><a href="https://ourworldindata.org/bioenergy-biofuels"><img src="https://ourworldindata.org/cdn-cgi/imagedelivery/qLq-8BTgXU8yG0N6HnOy8g/99904e99-0b0b-4342-6177-51f2c29b6900/w=1024"/></a>

The world dedicates a Poland-sized area of land to liquid biofuels. Is there a more efficient way to generate energy?<br><br><a href="https://ourworldindata.org/biofuel-land-solar-electric-vehicles"><img src="https://ourworldindata.org/cdn-cgi/imagedelivery/qLq-8BTgXU8yG0N6HnOy8g/9f05d67d-0d16-4494-86fd-23f5c563c200/w=1024"/></a>

Innovations in medicines and biotechnology have increased life expectancy and saved many lives. Explore how this happened, and how more progress can be made.<br><br><a href="https://ourworldindata.org/medicine-biotech"><img src="https://ourworldindata.org/cdn-cgi/imagedelivery/qLq-8BTgXU8yG0N6HnOy8g/9616ed87-e2c7-4b41-ef80-7ac6d428c800/w=1024"/></a>

A look back at the most popular charts, articles, data insights, and more from Our World in Data in 2025.<br><br><a href="https://ourworldindata.org/top-of-the-charts-2025-redirect"><img src="https://ourworldindata.org/cdn-cgi/imagedelivery/qLq-8BTgXU8yG0N6HnOy8g/ddab06f1-a4f4-4b0f-24e2-c376b650a600/w=1024"/></a>

A look back at the most popular charts, articles, data insights, and more from Our World in Data in 2025.<br><br><a href="https://ourworldindata.org/top-of-the-charts-2025"><img src="https://ourworldindata.org/cdn-cgi/imagedelivery/qLq-8BTgXU8yG0N6HnOy8g/ddab06f1-a4f4-4b0f-24e2-c376b650a600/w=1024"/></a>

Humans and livestock make up 95% of the world’s mammal biomass; wild mammals are just 5%.<br><br><a href="https://ourworldindata.org/wild-mammals-birds-biomass"><img src="https://ourworldindata.org/cdn-cgi/imagedelivery/qLq-8BTgXU8yG0N6HnOy8g/b86e8e53-9470-425a-0c59-7529f31e6200/w=1024"/></a>

A small number of species dominate the distribution of wild mammal biomass.<br><br><a href="https://ourworldindata.org/wild-mammal-biomass-dominance"><img src="https://ourworldindata.org/cdn-cgi/imagedelivery/qLq-8BTgXU8yG0N6HnOy8g/44fe312c-c616-4780-34d9-f1828e1f7e00/w=1024"/></a>

In the last three decades, the world has made progress against extreme poverty faster than ever before. But unless the poorest economies start growing, this period of progress against the worst form of poverty is over.<br><br><a href="https://ourworldindata.org/end-progress-extreme-poverty"><img src="https://ourworldindata.org/cdn-cgi/imagedelivery/qLq-8BTgXU8yG0N6HnOy8g/baec824b-408e-4d76-5e06-3817b5b0b600/w=1024"/></a>

Anxiety affects at least hundreds of millions of people every year. What treatments are available, and how have they changed over time?<br><br><a href="https://ourworldindata.org/timeline-anxiety-medications"><img src="https://ourworldindata.org/cdn-cgi/imagedelivery/qLq-8BTgXU8yG0N6HnOy8g/9a86b91f-d6ca-44b9-389d-cced0aa44200/w=1024"/></a>

Finding what you’re looking for, or discovering something new, has never been easier.<br><br><a href="https://ourworldindata.org/introducing-new-search"><img src="https://ourworldindata.org/cdn-cgi/imagedelivery/qLq-8BTgXU8yG0N6HnOy8g/31f2adef-3472-48f6-1dfc-e04a61045f00/w=1024"/></a>