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.

Data tracking public mobility trends over the pandemic

Explore all of our data on COVID-19 vaccinations, cases, excess mortality, and much more.

What we can and can’t learn from COVID-19 charts.

Which foods have the highest and lowest carbon footprint?

We worked with the Youtube channel, Kurzgesagt, to make a video on the COVID-19 pandemic and what to do about it.

Food waste accounts for around one-quarter of greenhouse gas emissions from food. That's 6% of total global emissions.

How we treat the climate impacts of methane matter a lot for carbon footprint of foods. But even if we exclude methane, meat and dairy products emit the most.

The Spanish flu pandemic had a devastating impact on the global population.

Fossil fuels are the dirtiest and most dangerous energy sources, while nuclear and modern renewable energy sources are vastly safer and cleaner.

Plant-based protein sources still have a lower footprint than the lowest-impact meat products.

Transporting food by plane can come with a large carbon footprint. But very little of our food travels this way – just 0.16% of food miles are from air travel.

“Eat local” is a common recommendation to reduce the carbon footprint of your diet. How does the impact of what you eat compare to where it's come from?

The media claims we are experiencing a ‘loneliness epidemic’. What is the evidence for this?

In countries such as Denmark and Switzerland, it is very common for people to live alone; but contrary to what many believe, this does not translate into higher loneliness. Loneliness and aloneness are not the same.

38 million people had HIV/AIDS in 2020. A couple of decades ago, the chances of surviving more than ten years with HIV were slim. Today, thanks to antiretroviral therapy (ART), people with HIV/AIDS can expect to live long lives. How many lives has ART saved?

Social connections matter for economic outcomes. Personal relations, even those that we maintain for non-economic reasons, often give us access to information and provide us with social collateral for economic transactions.

How many children die from pneumonia? How has this changed over time, and how can we prevent it?

More than three-quarters of global agricultural land is used for livestock, despite meat and dairy making up a much smaller share of the world's protein and calories.