Answers to some of the most frequently asked questions about vaping and its effects.<br><br><a href="https://ourworldindata.org/vaping-vs-smoking-health-risks"><img src="https://ourworldindata.org/cdn-cgi/imagedelivery/qLq-8BTgXU8yG0N6HnOy8g/54a3ed6a-16c9-4cf8-c5af-ef7bb9a89b00/w=1024"/></a>

Adding up the weight of very different materials doesn’t tell us about their scarcity, environmental, or socioeconomic impacts.<br><br><a href="https://ourworldindata.org/material-footprint-limitations"><img src="https://ourworldindata.org/cdn-cgi/imagedelivery/qLq-8BTgXU8yG0N6HnOy8g/920609d4-e819-4a82-d01a-821ca39f4a00/w=1024"/></a>

What do Americans die from, and what do the New York Times, Washington Post, and Fox News report on?<br><br><a href="https://ourworldindata.org/does-the-news-reflect-what-we-die-from"><img src="https://ourworldindata.org/cdn-cgi/imagedelivery/qLq-8BTgXU8yG0N6HnOy8g/9cf97009-994a-46f5-707b-980a8c6e4700/w=1024"/></a>

For decades, these aid programs received bipartisan support and made a difference. Cutting them will cost lives.<br><br><a href="https://ourworldindata.org/us-foreign-aid-saved-millions"><img src="https://ourworldindata.org/cdn-cgi/imagedelivery/qLq-8BTgXU8yG0N6HnOy8g/6b1dbe69-36c2-4089-8865-00bfba0e7200/w=1024"/></a>

A common bacterium can dramatically reduce the spread of dengue fever and other tropical diseases.<br><br><a href="https://ourworldindata.org/wolbachia-neglected-tropical-diseases"><img src="https://ourworldindata.org/cdn-cgi/imagedelivery/qLq-8BTgXU8yG0N6HnOy8g/b73cc19b-5461-4c8f-99dd-5ff063cbd900/w=1024"/></a>

The death rate per mile driven has declined 22-fold since 1950.<br><br><a href="https://ourworldindata.org/britain-safest-roads-history"><img src="https://ourworldindata.org/cdn-cgi/imagedelivery/qLq-8BTgXU8yG0N6HnOy8g/9fdccbaa-9640-4113-6d2a-93ab2ce2fa00/w=1024"/></a>

“Clearing the Air” is available now.<br><br><a href="https://ourworldindata.org/hannah-ritchie-new-book"><img src="https://ourworldindata.org/cdn-cgi/imagedelivery/qLq-8BTgXU8yG0N6HnOy8g/27999dbd-d329-40fe-1284-0661acb16100/w=1024"/></a>

Pesticide poisoning is a common method of suicide in many low- to middle-income countries. Banning highly toxic pesticides and substituting them with less fatal ones can save lives.<br><br><a href="https://ourworldindata.org/pesticide-bans-suicide-prevention"><img src="https://ourworldindata.org/cdn-cgi/imagedelivery/qLq-8BTgXU8yG0N6HnOy8g/d8cbf8af-42ff-4bb4-7704-444383efb400/w=1024"/></a>

People in high-income countries could dramatically improve lives worldwide with minimal financial commitment, yet few do.<br><br><a href="https://ourworldindata.org/global-inequality-opportunity-to-give"><img src="https://ourworldindata.org/cdn-cgi/imagedelivery/qLq-8BTgXU8yG0N6HnOy8g/4a07a4c2-8070-489b-cb46-62dc93a64700/w=1024"/></a>

In June 2025, the World Bank increased its extreme poverty estimates by 125 million people. This doesn’t mean the world has gotten poorer: it reflects a new, higher International Poverty Line of $3 a day, up from $2.15.<br><br><a href="https://ourworldindata.org/new-international-poverty-line-3-dollars-per-day"><img src="https://ourworldindata.org/cdn-cgi/imagedelivery/qLq-8BTgXU8yG0N6HnOy8g/43f2893b-21b1-42de-1908-2293e2516400/w=1024"/></a>

Over a century of progress in surgery, drugs, prevention, and emergency response has driven down death rates from heart disease and stroke.<br><br><a href="https://ourworldindata.org/cardiovascular-deaths-decline"><img src="https://ourworldindata.org/cdn-cgi/imagedelivery/qLq-8BTgXU8yG0N6HnOy8g/7ca4974e-8cc8-4b46-a09f-a870c56c1600/w=1024"/></a>

If we get it right, the world could save more than 1.2 million lives every year.<br><br><a href="https://ourworldindata.org/ending-tuberculosis-save-millions" target="_blank"><img src="https://ourworldindata.org/cdn-cgi/imagedelivery/qLq-8BTgXU8yG0N6HnOy8g/8168303b-e636-4850-ffdc-90eeca931600/w=1350"/></a>

Cuts to US aid could end the Demographic and Health Surveys. This would leave a massive gap in our understanding of global health, mortality, and development.<br><br><a href="https://ourworldindata.org/demographic-health-surveys-risk" target="_blank"><img src="https://ourworldindata.org/cdn-cgi/imagedelivery/qLq-8BTgXU8yG0N6HnOy8g/fd6c3b38-3997-4f3d-1051-b35ac4e0d000/w=1350"/></a>

The World Bank classifies countries into four income groups based on average income per person. This article explains how these groups are defined.<br><br><a href="https://ourworldindata.org/world-bank-income-groups-explained" target="_blank"><img src="https://ourworldindata.org/cdn-cgi/imagedelivery/qLq-8BTgXU8yG0N6HnOy8g/d4cdc240-17cd-4e8c-31e3-d1d197547600/w=1350"/></a>

Learn more about different options for embedding our interactive charts.<br><br><a href="https://ourworldindata.org/new-feature-embed-archived-charts" target="_blank"><img src="https://ourworldindata.org/cdn-cgi/imagedelivery/qLq-8BTgXU8yG0N6HnOy8g/7eedca36-daec-4abd-5f19-a87de6a05a00/w=1350"/></a>

Mobile money allows people without banks to securely transfer funds via text message, and its adoption is growing rapidly.<br><br><a href="https://ourworldindata.org/mobile-money-why-it-matters" target="_blank"><img src="https://ourworldindata.org/cdn-cgi/imagedelivery/qLq-8BTgXU8yG0N6HnOy8g/c18c6704-95a3-4757-6f5a-7036d5b86400/w=1350"/></a>

In the 1980s, many thought tuberculosis was on the path to elimination. In reality, more were dying from the disease than ever.<br><br><a href="https://ourworldindata.org/the-end-of-tuberculosis-that-wasnt" target="_blank"><img src="https://ourworldindata.org/cdn-cgi/imagedelivery/qLq-8BTgXU8yG0N6HnOy8g/b5aa8c82-2fc4-4e0a-cdf1-82d5aa6f9800/w=1350"/></a>

For billions, it can mean hours spent collecting water. For almost a million, it means dying from disease.<br><br><a href="https://ourworldindata.org/what-no-safe-water-means" target="_blank"><img src="https://ourworldindata.org/cdn-cgi/imagedelivery/qLq-8BTgXU8yG0N6HnOy8g/59c8ad10-ac08-4179-3186-1b2bac060c00/w=1350"/></a>

Measles causes more than an acute illness: it suppresses immune memory and increases the risk of complications for years.<br><br><a href="https://ourworldindata.org/measles-increases-disease-risk" target="_blank"><img src="https://ourworldindata.org/cdn-cgi/imagedelivery/qLq-8BTgXU8yG0N6HnOy8g/b2168626-1df5-419a-7709-f57955f46800/w=1350"/></a>

Learn what’s new and try it out yourself.<br><br><a href="https://ourworldindata.org/new-features-better-maps" target="_blank"><img src="https://ourworldindata.org/cdn-cgi/imagedelivery/qLq-8BTgXU8yG0N6HnOy8g/8da19868-55c1-4da5-377d-63174a202d00/w=1350"/></a>