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We dig into the numbers behind the big stories that are shaping our world.

An important part of what we are doing at Tortoise is data journalism – finding stories in large sets of data. It is slow news in its purest form. Our tool for this is the index.

Indices collect and organise data to deliver clarity on topics by nature. They are accurate, insightful, and powerful tools for change.

The work we do will provide a wellspring of data-driven insights that will inform and shape the stories we tell.

Expert leadership & insight

Our team is led by Alexandra Mousavizadeh, who has more than 20 years’ experience in ratings and data analysis. We bring together renowned experts from many fields to advise us and validate our work.

“An index can be a roadmap for driving real change in the world, helping policy makers to reset their ambition and goals”
– Alexandra Mousavizadeh

A new kind of data storytelling

Combining offical data sets with live social data, we use machine learning and advanced data visualisation techniques to bring out the truth hidden inside the numbers.