Good (and high-paying) jobs dealing with environmental conservation?

Following this summer i will officially begin my senior year of high school. As such, i have recently started looking for a job that would both hold interest for me as well as provide a nice salary. I was wondering if there were any jobs out there that are high paying as well as deal with conserving the environment, something i feel very pionate about. I am also planning on attending a four year university after high school, so what cles should i take at college to help me towards such a career?