This is what he had to say 5 years ago.

https://grist.org/food/6-ways-bill-and-melinda-gates-are-betting-the-world-will-improve-in-15-years/

All hubris.

I live in Africa.

I don't see how he has made any difference whatsoever. In fact, I don't see how anything he has done has made any difference on any sort of worthwhile scale.

Technology will not solve climate change. We are running out of sand. We are using up our mineral resources, etc. And technology needs to those things. When they are all used up, what then?

The key to climate change is for human beings to use less.