- Giants
- Our World in Data
- UK car emissions decline
UK car emissions decline
Our World in Data's line chart drew 22.8K views on X: 0.8x its typical post and #100 of 139 Our World in Data charts we track by views. Read Oct 10, 2026.
Cars in the UK are much less polluting than they were 30 years ago, thanks to emissions limits and technological advancements from automakers.
Why it spread
It spread because it explains itself calmly and landed on a hot topic that week, reaching 22,766 views, 231 likes, 54 reposts, 6 quotes and 16 saves.
What worked
- The post text explains the chart in plain words, so readers understand the trend without needing extra context.
- The chart is a simple line with high self labelling and a visible source line, which makes it easy to trust and share.
- The topic was timely and relevant that week, which helped the post travel beyond the account's usual audience.
What to borrow
We could pair a simple line chart with a short plain language caption that states the trend and the reason, then add a clear source line so readers can share it without asking questions.
Careful
Do not assume the same framing will always work, because the quote rate was below average and the spread depended partly on a hot topic that week.
Written by our analysis model from the measured numbers above, not by Our World in Data.
Make it yours
Your numbers, in this line chart.
Starts from the real numbers of "Cleaner cars: emissions of nitrogen oxides (NOx) per kilometer have declined by more than " by Our World in Data. Replace every number with yours before you post. Make one like this, step by step
Free pictures carry a small "Made with ViralChart" line. That line is how other people find us.
API · Max
Use this chart via API
On the Max plan you can pull this chart's numbers with the provenance of each one, as JSON or CSV, with its redraw spec, or call it from an agent over MCP. Chart id 475d158eda85.
Approximate values. Our two readings of this chart agreed only in part (confidence 0.49 of 1), so check the original before you quote a number. The API marks it lowConfidence, and ?min_confidence=0.5 leaves it out.
| Path | Returns | Plan | |
|---|---|---|---|
| GET | /api/v1/charts/475d158eda85 | Title, publisher, date, form, point count; with a Max key, the data link | Open |
| GET | /api/v1/charts/475d158eda85/data | Every point with its provenance and confidence, plus the redraw spec. Add ?format=csv for CSV | Max |
| GET | /api/v1/charts/475d158eda85/render?view=1 | The draw-only view this page uses | Open |
| POST | /mcp | Tool get_chart_data with this id, for Claude, Cursor and other agents | Max |
curl -s https://viral-chart.com/api/v1/charts/475d158eda85/data \
-H "Authorization: Bearer $VIRALCHART_KEY"claude mcp add --transport http viralchart https://viral-chart.com/mcp \
--header "Authorization: Bearer $VIRALCHART_KEY"60 requests a minute per key; over that you get 429 with Retry-After. Up to 5 keys per account, made on your account page and shown once. Without Max, the data route answers 402 with a link to the plans. The numbers describe a chart its publisher owns, and every file carries a license note.
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Questions people ask
How far did Our World in Data's "UK car emissions decline" chart travel?
22,766 views, 231 likes, 54 reposts and 16 saves on X, read Oct 10, 2026. A normal post from @OurWorldInData gets about 28.6K views.
What kind of chart is it?
A line chart. Cleaner cars have reduced nitrogen oxide emissions per kilometer.
Can I use Our World in Data's chart?
Use the format, not the picture. The chart, logo and design belong to Our World in Data. ViralChart redraws the chart type with your numbers and words, and credits the original publisher.