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June heatwave may have killed around 20,000 people in Europe
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June heatwave may have killed around 20,000 people in Europe

New Scientist · Jul 2, 2026, 5:17 PM · Also reported by 2 other sources

Key takeaways

  • It will be some months before the true toll of Europe's worst-ever heatwave is confirmed, but researchers can estimate a death count based on how many people died in Europe during previous hot periods
  • Europe’s most extreme heatwave so far may have killed between 17,000 and 25,000 people, according to an early estimate based on past deaths from heat in the region.
  • “These numbers are preliminary,” says Christopher Callahan at Indiana University. “But they highlight the need for rapid adaptation investments to avoid these impacts in the future.”

Why this matters: new research or scientific developments with potential real-world impact.

It will be some months before the true toll of Europe's worst-ever heatwave is confirmed, but researchers can estimate a death count based on how many people died in Europe during previous hot periods

Twitter / X icon Linkedin Reddit Email The June heatwave is estimated to have killed more than 5000 people in France

Europe’s most extreme heatwave so far may have killed between 17,000 and 25,000 people, according to an early estimate based on past deaths from heat in the region.

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