Global warming is, in my humble opinion, man-made. I mean if you think about it, the reason why we have it in the first place is our unrestrained pursuit of riches and advancement without due regard to environmental preservation.
5 million deaths a year caused by global climate related abnormal temps. The world's largest study of global climate related mortality found deaths related to hot temperatures increased in all regions from 2000 to 2019, indicating that global warming due to climate change will make this mortality figure worse in the future. The international research team looked at mortality and temperature data across the world from 2000 to 2019, a period when global temperatures rose by 0.26C per decade. Source 5a.