writing & media

How elections spread across the world, and what that has and hasn't meant for democracy.

Dozens of countries are already shrinking. A country-by-country look at when each one peaks.

What actually happened during the post-war baby boom, and how unusual it was.

A widely quoted number that is easy to misread — and what it does and doesn't measure.

A retrospective of the pandemic told through the charts that mattered most.

The story of how a small team ended up maintaining the world's COVID-19 dataset.

Note on winding down the daily COVID-19 data pipeline.

What the UN's 2024 revision changed about when and where world population peaks.

What building a global pandemic dataset taught us about data infrastructure in a crisis.

Introducing explorers that bring the main conflict datasets into one place.

The sex gap in life expectancy exists almost everywhere. This looks at why.

Note on switching our COVID-19 case and death data from Johns Hopkins to the WHO.

Talk on how we read charts, and what that implies for making better ones.

The headline results from the UN's 2022 revision of world population projections.

Live radio interview on No Toquen Nada (Del Sol FM), on our work during the pandemic and what came after.

Note on archiving the global testing dataset, and why comparisons had become unreliable.

How the long-run population series is stitched together, and where the numbers come from.

Live interview on Catalonia's 24h public news radio, reviewing the rise in COVID-19 cases in Europe.

Profile in Crónica Global on our work during the COVID-19 pandemic.

Radio interview on No Toquen Nada (Del Sol FM), on adapting to fast-moving data.

Quoted in USA Today fact-checking claims about vaccines and India's case surge.

Introducing the whatstk library on Towards Data Science.

Master thesis defence, after a six-month stay at the National Institute of Informatics in Tokyo.

• 6 July 2018 — Universitat Politècnica de Catalunya (Barcelona)
• 14 June 2018 — KTH Royal Institute of Technology (Stockholm)

Results from the Digital Typhoon project, presented at Yokohama National University.

• 26 April 2018 — Yokohama National University (Yokohama)

Interview with Prof. Kitamoto in Nikkei Science about the Digital Typhoon project.