Any companies working with AI for climate or health?

I’ve worked at a big tech company for about 2 years as a Data Scientist and I don’t feel fulfilled. I want do something meaningful. Are there any companies working on climate science or actually improving human health (not pushing pills) that need Data Scientists? Things that I find interesting:

-Predicting/modeling climate change and climate disasters
-Sustainable city design. Designing better public transit and infrastructure for walkability and bikability.
-Understanding how nature works (speaking with whales, tree wood wide web, …

big climate climate science companies data datascience data scientist data scientists health human modeling science scientists something tech