How is life on Earth distributed across the taxonomic kingdoms? Humans make up just 0.01% of life: but we've had much larger impacts on shaping the animal kingdom. Livestock now outweighs wild mammals and birds ten-fold.

15,000 children die on average every single day. Reducing child mortality is a key target of the Sustainable Development Goals (SDGs). What would it take for the world to reach it?

Global demographic transition signals a shift from young, growing populations to older, stable ones, reshaping societies and economies.

We are one of the few non-profits that Y Combinator has decided to accept.

The number of children in India peaked in the first decade of the 2000s.

Whether inequality is rising or falling depends on where, when, and what aspect of inequality we have in mind.

How has child mortality declined worldwide across the last two centuries?

Life expectancy has doubled over the last two centuries around the world. How has this happened?

The Internet has already changed the world, but the big changes it will bring still lie ahead.

Rinderpest was a disease that primarily infected cattle and buffalo. Thanks to a decades-long international campaign, it was the first animal disease to be eradicated.

More than half of the world live in urban areas, and this will continue to grow.

Substantial progress has been achieved in the first 15 years of the new millennium, but in most aspects not as fast as the achievement of the MDGs required.

By showing us where the people in the world are, cartograms help us understand global living conditions better.

Common questions about plastic pollution.

Materials with key interactive data visualizations for five of our most popular topics.

Carbon pricing can be an effective way to reduce emissions. Why is it more successful in some countries?