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.
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The high temperatures recorded in the extreme heat events that occurred in Central Asia in March, South Sudan in February and in the Mediterranean last July would have not been possible without climate change, according to the report. At least 21 people died in Morocco after temperatures hit 118 degrees Fahrenheit (48 degrees Celsius) last July. People are noticing temperatures are getting hotter but don't always know it is being driven by climate change, said Roop Singh, head of urban and attribution at the Red Cross Red Crescent Climate Centre, in a World Weather Attribution statement.
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City-led initiatives to tackle extreme heat are becoming popular in parts of South Asia, North America, Europe and Australia to coordinate resources across governments and other agencies. One example is a tree-planting initiative launched in Marseille, France, to create more shaded areas.
The report says strategies to prepare for heat waves include monitoring and reporting systems for extreme temperatures, providing emergency health services, cooling shelters, updated building codes, enforcing heat safety rules at work, and designing cities to be more heat-resilient.
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