Amsterdam spent years trying to build an unbiased welfare fraud algorithm. Here’s what we found when we analyzed it.

Norway’s criminal justice system is regularly hailed as a model — but is it truly impartial?

How we gathered data from two countries for our investigation Drownings and Deterrence in the Rio Grande

How we tested outcome data against six different statistical fairness definitions.

How we analyzed millions of Telegram posts to discover the secret recipe for making climate change conspiracy theories go viral in the world of European QAnon

How we investigated the scale of brain waste, who is most affected, its causes, costs, and potential solutions

What we learned about using international and national trade, customs and shipping data to track the opaque and complex global plastic waste trade.

France uses an algorithm to rank millions of people by their alleged risk of welfare fraud — here’s how we took it apart.

A detailed explainer on what we did and how we did it

How we analyzed official policies for vaccinating undocumented migrants across Europe