Katie came to Tortoise from the Wall Street Journal, where she was a graphics reporter covering business and technology from New York. Before that she worked at the Financial Times, the Atlantic, and a London-based data visualisation start-up. She’s originally from Chicago, Illinois.
Katherine Riley
Graphics Editor

“As someone whose career sits at the intersection of the news and technology industries, I’ve never been asked to justify my utility at Tortoise. Everyone here knows that there’s more than one way to be a journalist.”
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Sunday 8 January 2023
The Westminster Accounts –Methodology
The process of collecting, analysing and visualising tens of thousands of financial records gets very complicated very quickly – here’s how we did it
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Sunday 8 January 2023
Letting the light in
The fact that all of this data was already public meant that collating it all couldn’t be that hard, right? Wrong. Very wrong
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Sunday 8 January 2023
Come fly, MP
Hidden in plain sight: David “Airmiles” Morris
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Thursday 26 May 2022
10 minute readSensemaker: Nightmare of wheat
What just happened
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Friday 13 May 2022
Who abortion bans hurt
The US states most likely to ban abortion if Roe v Wade is overturned are those where it’s most needed
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Thursday 12 May 2022
10 minute readSensemaker: Who abortion bans hurt
What just happened
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Wednesday 6 April 2022
The pay gap gap
The UK has a gender pay gap problem. It’s not just the gap, which still favours men over women across much of the economy. It’s a bizarre loophole that can mask unfairness and financial insecurity.
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Wednesday 6 April 2022
10 minute readSensemaker: The pay gap gap
What just happened
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Tuesday 29 March 2022
Gas guzzlers
In a climate and energy crisis, the UK’s leaky, old housing stock is an extravagance neither people nor the planet can afford.
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Friday 18 March 2022
10 minute readSensemaker: Moscow mules
What just happened
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Monday 14 March 2022
Shadow whipping: the men who saved Boris
Whipping up support
We’ve charted the changing attitudes of Conservative MPs towards the prime minister over the last two months – with “Partygate” dominating the news for much of that time. The results may surprise you
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Friday 22 October 2021
Can Asia kick its coal habit?
The world’s most populous continent, with its fastest-growing economies, depends on coal. We’ve mapped the data over the last 50 years to try and get a sense of this critical challenge for Asia – and the world
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Tuesday 28 September 2021
The world just missed its first major vaccine target. Here’s why
Ten per cent of every country’s population was meant to be fully vaccinated by the end of this month. But poorer countries, in particular, just haven’t had the doses
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Friday 3 September 2021
The Arms Race: Beta Vaccine Tracker
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Tuesday 5 April 2022
The gender pay gap bot
On International Women’s Day, a Twitter bot drew attention to the gender pay gap in Britain’s biggest companies. But does the data they report tell the full story?