Millions of people living on tropical islands could face a future of increasingly dangerous heat as climate change drives longer and more intense periods of humid conditions. While rising temperatures are often discussed as the main consequence of climate change, humidity plays a crucial role in determining how much heat the human body can tolerate. When the air is already full of moisture, sweat evaporates less effectively, making it harder for people to cool down.

Millions of people living on tropical islands could face a future of increasingly dangerous heat as climate change drives longer and more intense periods of humid conditions. While rising temperatures are often discussed as the main consequence of climate change, humidity plays a crucial role in determining how much heat the human body can tolerate. When the air is already full of moisture, sweat evaporates less effectively, making it harder for people to cool down.

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