17 days ago
World’s seas heated by a record 23 zettajoules last year

What's happening
SignalsMonitor is following this as a general story. The Guardian UK is the outlet attached so far. The first report grouped here was at 30 Sept 2026, 06:00 UTC. 2 material updates are listed in the timeline. The headline in use is “World’s seas heated by a record 23 zettajoules last year”. This note is SignalsMonitor's own briefing, not the publisher's article.
What we know
The injection of thermal energy comes amid an increasing rise in sea levels and continuing acidification A record-breaking 23 zettajoules of heat was sunk into the world’s seas last year, leaving ocean waters hotter, higher and less hospitable, a report has found.
Story timeline
Reports grouped into this story, earliest first. Exact repeats from the same outlet are collapsed.
- First reported by The Guardian UK
- New development reported by The Guardian UK
World’s oceans absorbed record heat equal to 40 times annual global energy use
Reported by 1 outlet
- The Guardian