Have you tried to satisfy your open-minded curiosity on this question?
A simple Google search brings up: https://lancetcountdown.org/2025-report/
A couple of excerpts from the front page, without even registering to access the full report:
1.1.5 Heat-related mortality
Failure to curb the warming effects of climate change has seen the rate of heat-related deaths surge 23% since the 1990s, to 546,000 a year.
1.2.1 Wildfires
The risk of wildfires is growing: 2024 saw a record-high 154,000 estimated deaths from wildfire smoke-derived small particulate matter air pollution (PM2.5)
One could argue that heat related deaths could be due to the fact that there are more old people alive right now compared to any point in time in human history due to high life expectancy and they are the most vulnerable to heatwaves. Had the percentage of younger population been higher, the numbers would have been different. Also in a way it’s Karma, that older population is the one that lived their lives like there’s no future and thought that climate change is a problem for younger generations and now they would be the first to die like flies