Climate change sparks extreme weather worldwide | Updated: 2023-07-10 06:35
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Children play and cool off at a splash park in downtown Houston, Texas, United States, on June 15, 2023. [Photo/Xinhua]

Heat waves

The heat wave that hit southern US was also record-breaking. Forecasters warn that it may be more dangerous than typical heat because the temperatures at night are not cooling down as much as they normally do, and the heat index readings are higher than normal. The heat index is a measure of how hot it feels to the human body when relative humidity is added to the actual air temperature.

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