Erwan Rivault
@erwanrivault.com
Data visualisation designer at BBC News focusing on satellite data, climate change and cartography | previously at @esa.int | Co-founder of @chartle.cc - A daily chart game
Last week's heatwave broke more than 170 June temperature records across the UK, mostly in England and Wales, with some weather stations recording maximum temperatures up to 6C above previous records. Our analysis of the UK and Europe heatwave in 7 maps and charts: www.bbc.co.uk/news/article...
New FT investigation: Leaked satellite tasking records show Iran used a high-resolution Chinese satellite to surveil US bases last month. as.ft.com/r/ac8726e8-f...
Iran used Chinese spy satellite to target US bases
Leaked documents show IRGC secretly acquired system and used it to guide strikes during war in March
as.ft.com
I love a Sankey diagram that doubles as a map, and today's New York Times example (tracking oil and gas flows through the Strait of Hormuz) is especially brilliant! Reminds a lot of Minard’s famous visualisation of Napoleon’s 1812 Russian campaign of course. (I’ve rotated the NYT one horizontally)
Massive 20km long oil spill visible in yesterday's Sentinel-2 satellite image following US strike on Iranian drone carrier Shahid Bagheri near Bandar Abbas.
We’ve tracked A23a iceberg for a while now, but this is our last story about it! Once the world’s biggest (2x the size of Greater London), it drifted north up to 47ºN where warmer waters and seas broke it into smaller bergs, ending up as the world’s largest pool as melt ponds formed on its surface.
A special FT magazine issue all about maps is out today, w great pieces by @okr.bsky.social and @theboysmithy.ft.com, plus maps by me on how glacial melt is redrawing Alpine borders, the battle to redraw America and more Read it online here (though best enjoyed in print!) www.ft.com/content/efab...
This is fantastic. Engaging people with data through game play. Also has that very Gapminder-ish quality of challenging assumption. Love it!
Erwan Rivault@erwanrivault.com · 11mo agoLaunch day 🚀 We’ve just released @chartlecc.bsky.social - a daily chart game! Your job is to guess which country is represented by the red line in today's chart. You get 5 tries, no other clues! Play today, come back tomorrow for a different chart with new data and share with your chart friends 📈
It's official 🎉 Visualising Climate 2026 is here! visualisingclimate.com First international conference of its kind, it'll bring together artists, scientists, journalists all moved by the same desire to better communicate our changing climate 🌍 🗓️ Join us in Bologna, Nov 4-6 #dataviz #climatecrisis
Visualising Climate 2026 — Conference
The first global conference dedicated to how data visualisation can transform public understanding of climate change and support informed decision-making.
visualisingclimate.com
Visualising Climate@visualisingclimate.com · 6mo agoJoin us in Bologna, Italy, 4–6 Nov 2026 for Visualising Climate — the first global conference fully dedicated to climate data visualization and its power to transform public understanding of a changing planet. Come see the data. visualisingclimate.org #VisualisingClimate2026 #DataVis #ClimateCrisis
Scientists have just unveiled the most detailed data yet of the terrain hidden under Antarctica’s ice. We mapped it and compared it to the previously best available data for our story with @markpoynting.bsky.social www.bbc.co.uk/news/article...
The global warming trend continued in 2025. Each of the past 11 years (2015–2025) has been among the 11 warmest on record. Explore more data from #CopernicusClimate in the Global Climate Highlights 2025. #GCH2025 🔗 climate.copernicus.eu/global-clima... @ecmwf.int
Which country consumes the most beer per person? Think you can guess it in 5 tries or less? Have a try at chartle.cc
New exciting update to chartle.cc 📈 You can now use the *Explore data* mode after finishing a game to find out what all the other grey lines represent. This has been requested by many of you, thanks for all the feedback! Let us know what you think!
Chartle - A daily chart game
Guess the country in red by analysing today's chart
chartle.cc
New record year for renewable electricity in Britain - thanks especially to strong solar output. Read our analysis of 2025 here www.bbc.co.uk/news/article...
Which country holds the world’s largest proven crude oil reserves? Think you can guess it? Have a try at chartle.cc
#30daymapchallenge · Jour 30 · Relooking 🌍 Europe · Europa · Ευρώπη · Європа 🔍 Zoomez pour découvrir les villes d'Europe dans leur langue. 🔽 L'ancienne carte, en commentaire, utilisait un texte de substitution, réalisée pour le #30daymapchallenge 2024. #cartographie #map #europe #europa
This has been such a lovely way to start class in my vis course over the past few weeks.
Erwan Rivault@erwanrivault.com · 11mo agoLaunch day 🚀 We’ve just released @chartlecc.bsky.social - a daily chart game! Your job is to guess which country is represented by the red line in today's chart. You get 5 tries, no other clues! Play today, come back tomorrow for a different chart with new data and share with your chart friends 📈
Can you guess which country suddenly stopped all its nuclear power generation in the early 2010s, and then slowly restarted it? Have a try at chartle.cc
The Israeli military is placing large yellow blocks to delineate the newly established Yellow Line in Gaza - issue is, it’s off by over 500 meters in some areas, shrinking the Palestinian safe area. www.bbc.co.uk/news/article...
Do you enjoy playing chartle.cc? We’re opening up to the community! Are you a scientist, journalist, researcher or just a data-enthusiast and would like to submit your own data (it should be a country-based time series)? Get in touch with us - we’d love to feature it!
Chartle - A daily chart game
Guess the country in red by analysing today's chart
chartle.cc
New visual story: Bird migration is one of nature’s greatest spectacles — and scientists are uncovering extraordinary insights into how new threats are reshaping these epic journeys. Follow the remarkable travels of three birds as they fly across the planet. www.theguardian.com/environment/...
Can you guess which country went from producing almost 70% of its electricity from coal in the 1980s to just 0.82% in 2024? Think you know? Try it at chartle.cc
October 11 SkySat imagery from @planet.com shows a column of smoke rising from the Sheikh Ejleen Waste Water Treatment Plant after the IDF withdrew from the base they established at the plant. SkySat imagery from October 7 shows IDF vehicles and temporary structures set up inside the plant.
NEW: How mega batteries are unlocking an energy revolution Massive shipping containers packed with powerful batteries are shoring up grids & extending the use of clean power ig.ft.com/mega-batteri... Latest visual story w/ @samlearner.bsky.social @inari-ta.bsky.social @samjoiner.bsky.social
How mega batteries are unlocking an energy revolution
Vast battery units are shoring up grids and extending the use of clean power
ig.ft.com
Daily Chartle player? We’ve got an update for you 👀 You can now see how everyone else scored when you finish the game (this is today's game). Keep the feedback coming, it’s helping us make chartle.cc better!
Can you guess which country has the most hospital beds per capita in the world? Have a try by playing at chartle.cc
Starting a 3-month pilot today with the BBC’s brand-new satellite data team! We'll be focusing on using remote sensing data for news stories and longer-term investigations 🛰️ 🌍 Got tips, an upcoming paper or data, or just ideas you'd like to share with us? DM or email me at erwan.rivault@bbc.co.uk
It's been a week since we launched @chartle.cc with @adnaanj.bsky.social and we had an amazing start! - Average of 700 users/day - Record 1.2K users yesterday - From 78 countries - 66% win overall - 2m 18s average engagement Thank you to all who played + shared the game Any feedback, send our way!
Erwan Rivault@erwanrivault.com · 11mo agoLaunch day 🚀 We’ve just released @chartlecc.bsky.social - a daily chart game! Your job is to guess which country is represented by the red line in today's chart. You get 5 tries, no other clues! Play today, come back tomorrow for a different chart with new data and share with your chart friends 📈
A chart-themed game in your datavis dispatch this week! @chartle.cc 📈
Datawrapper@datawrapper.de · 11mo agoThis week's Dispatch brings a range of topics — U.S. politics, gender issues, the economy, conflict, and climate — as well as a chart-themed game at the end. 📊 🕹️ www.datawrapper.de/blog/data-vi...
