Half of world’s population endured extra month of extreme heat due to climate change, experts say
- Posted on May 30, 2025
- By The Toronto Star
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Half of world’s population endured extra month of extreme heat due to climate change, experts say

Scientists say 4 billion people, about half the world’s population, experienced at least one extra month of extreme heat because of human-caused climate change from May 2024 to May 2025.