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What is childhood wasting?

Childhood wasting is an important indicator of malnutrition. What is it, and how is it measured?

Hannah Ritchie

What is childhood stunting?

Stunting is an important marker of childhood malnutrition. But what is it, and how is it measured?

Hannah Ritchie

What is undernourishment and how is it measured?

How do we measure the prevalence of hunger across the world?

Hannah Ritchie

In most countries, democracy is a recent achievement. Dictatorship is far from a distant memory.

How old are democracies across the world?

Bastian Herre

How we’re building a team for better data at Our World in Data

Data is too often published in a way that’s hard to understand, check and build upon – reinforcing the low valuation it gets in society. Here is how we’re trying to break out of this bad equilibrium.

Joe Hasell

Around one-in-three children globally suffer from lead poisoning. What can we do to reduce this?

Estimates suggest that around every third child in the world suffers from lead poisoning. What can we do to reduce this?

Hannah Ritchie

Dairy vs. plant-based milk: what are the environmental impacts?

A growing number of people are interested in switching to plant-based alternatives to dairy. But are they better for the environment, and which is best?

Hannah Ritchie

The history of the end of poverty has just begun

The decline of global poverty is one of the most important achievements in history, but the end of poverty is still very far away.

Max Roser

Many countries have eliminated lead from paint. How do we achieve the same everywhere?

Paint is an important source of lead exposure. Which countries have regulations on its use?

Hannah Ritchie

Many countries have achieved an impressive reduction in lead poisoning

The phase out of leaded gasoline, and regulations on leaded paints and pipes has led to a dramatic reduction in lead poisoning across many countries.

Hannah Ritchie

How the world eliminated lead from gasoline

In 2021, Algeria became the last country to ban leaded gasoline. How did the world achieve it?

Hannah Ritchie

The IEA wants to make their data available to the public – now it is on governments of the world’s rich countries to make this happen

We are just one step away from unlocking the world's energy data for everyone. This would be a massive achievement for progress on energy and climate.

Hannah Ritchie and Max Roser

What is the COVID-19 Stringency Index?

An explanation of the nine metrics used to calculate the Stringency Index

Max Roser

Attitudes to COVID-19 vaccinations

How do attitudes to COVID-19 vaccinations vary across the world; and how are they changing with time?

Bobbie Macdonald

Global economic inequality: what matters most for your living conditions is not who you are, but where you are

How much does it matter to be born into a productive, industrialized economy?

Max Roser

How much energy do countries consume when we take offshoring into account?

How do energy footprints compare across the world when we adjust for the goods that we import from overseas?

Hannah Ritchie

200 years ago, everyone lacked democratic rights. Now, billions of people have them

Half of all countries are democracies. But how many people enjoy democratic rights?

Bastian Herre

Many countries have decoupled economic growth from CO₂ emissions, even if we take offshored production into account

It is possible to reduce emissions while growing the economy. But this decoupling needs to happen faster.

Hannah Ritchie

Easier data reuse and more flexible visualizations - what we in the developer team are working on

Daniel Bachler

Data review: how many people die from air pollution?

This data review presents published estimates of the global death toll from air pollution and provides the context that makes them understandable.

Max Roser

How do death rates from COVID-19 differ between people who are vaccinated and those who are not?

To understand how the pandemic is evolving, it’s crucial to know how death rates from COVID-19 are affected by vaccination status.

Edouard Mathieu and Max Roser