Hey everyone I'm soon to be an undergrad and I need help to decide on my major. What truly drives me is working to make the world a better place, especially by fighting water pollution, climate change, and such. I would also enjoy working in areas of biotechnology if it makes a direct positive impact on the world. The fields that I have listed up there are areas I can see myself working at but I have no idea how to decisively select my major. I'm really not sure if I want to go to graduate school. I might, I might not. I also want to be financially comfortable in my life.

With your experiences and hindsight, could you please advise me on where I should go? Thanks a lot!