So, I started to donate for science and education in Ukraine on a monthly basis, https://u24.gov.ua/
canceled Amazon Prime, switched to Ecosia as my browser and search engine, and left a (very minor) role in an advisory committee for a US government program.
(These are just some little steps, but you need to start somewhere)
@hfalcke This sounded good until I read they plant trees. I really hope they are planting the correct trees in the right places, and are not misguided by false classification of savannas and other #TropicalGrassyBiomes as "degraded forests". Planting the wrong trees in the wrong place is a disaster for biodiversity in those places.
Prof Heino Falcke
Savannology