The Industrial Revolution ended the Malthusian trap in which incomes were determined by the size of the population — making it possible for a country to leave abject poverty behind.

There are two ways that COVID-19 deaths can be presented over time: by the date of death, or the date on which the death is reported. The data for Sweden is shown by date of death – this means the most recent points should be treated as incomplete.

Globally, aviation accounts for around 2.5% of CO₂ emissions. But for many, it accounts for a much larger share.

40% of eligible voters in the US did not vote in the 2016 election. Young Americans in particular often do not exercise their right to vote – less than half of eligible under-30s voted in the last election.

Americans have a lower life expectancy than people in other rich countries despite paying much more for healthcare. What factors may explain this?

Aviation accounts for 2.5% of global CO₂ emissions. Where do these emissions come from?

The Our World in Data dataset which has tracked COVID-19 testing across the world since the start of the pandemic has been peer-reviewed and published in the academic journal, Nature Scientific Data.

Transport accounts for around one-fifth of global CO₂ emissions. Three-quarters of this is from road transport.

Millions of people use Our World in Data every month. We looked at survey responses to understand who uses our work, and what for.

A video about the drivers and possible solutions to climate change.

It’s often argued that life expectancy across the world has only increased because child mortality has fallen. But this is untrue. The data shows that life expectancy has increased at all ages.

Globally, we emit around 50 billion tonnes of greenhouse gases yearly. Where do these emissions come from? We take a look, sector-by-sector.

There is an assumption that countries face a trade-off between protecting people’s health and protecting the economy. But is this assumption true?

830 women die from pregnancy-related causes on any given day. How can we use the Exemplar framework to learn how we can reduce these deaths?

We know that confirmed COVID-19 cases are only a fraction of true infections. How small a fraction though?

An overview of the features that we built in the last two months.

For most of our history, we were losing terribly against the microbes. Only recently did we turn the battle in our favor. Vaccines were a major breakthrough.

Excess mortality has become a key metric to understand the true impact of the COVID-19 pandemic. How is excess mortality measured; and what can we learn from cross-country comparisons?

A video about the contributors to climate change, and how countries can work together.

Not all countries report their data in a helpful way. To help official providers of testing data, we set out some simple recommendations based the best reporting practices across the countries included in our testing dataset.