DeBriefed 26 June 2026: Heat records broken across Europe | London climate action week | Introducing ‘Project Cosmos’

Europe is experiencing record-breaking heatwaves, with the UK, France, Spain, and Switzerland reporting their highest temperatures for June. Climate experts and UN officials have linked these extreme weather events to fossil-fuel-driven climate change and are calling for urgent global action on energy transition.
Why it matters
The report underscores the accelerating impact of climate change on global infrastructure and public health, necessitating immediate policy shifts toward renewable energy.
Welcome to Carbon Brief’s DeBriefed. An essential guide to the week’s key developments relating to climate change.
The content relies on scientific consensus and reporting from multiple international news outlets regarding climate data.
Get smarter about the news
Sign up free for a feed built around what you actually care about, Dive Deeper research on any story, and the full text of every article.
Create free accountAlready have an account? Sign in