What’s behind this summer’s heat, and why 2027 could be worse

illuminem summarises for you the essential news of the day, reviewed by our editorial team. Read the full piece on MIT Technology Review or enjoy below:

🗞️ Driving the news: Record-breaking heat has swept across the Northern Hemisphere this summer, with Europe experiencing its hottest June–July period on record and the contiguous U.S. recording its hottest July ever. 
• Scientists warn that a developing El Niño could push global temperatures even higher in 2027.

🔭 The context: Climate change is raising baseline temperatures, making heatwaves more frequent and intense across the world.
• Europe has warmed faster than any other continent outside the Arctic, with recent heatwaves made several degrees hotter than they would have been in past decades
• The current El Niño event is releasing stored ocean heat into the atmosphere, amplifying the effects of human-driven warming
• Scientists expect El Niño’s strongest impact on global temperatures to arrive months after the event begins, meaning 2027 could see a larger temperature spike than 2026

🌍 Why it matters: The combination of long-term warming and natural climate cycles is creating more extreme conditions, increasing risks to health, energy systems, agriculture, and ecosystems. The world has never experienced a strong El Niño on a planet already warmed by more than a century of fossil fuel emissions.

⏭️ What’s next: Researchers are closely monitoring El Niño’s development and preparing for potential record temperatures in 2027. Governments and communities are being urged to strengthen heat adaptation measures while accelerating emissions reductions.

📈 One stat: July 2026 became the hottest month ever recorded in the contiguous United States, surpassing a record set during the 1936 Dust Bowl.

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