Engineer??

<p>I'm going to Brown this fall, and I have to sign up for my courses. I'm having some trouble choosing what I want to study and was looking for some advice.
I'm very interested in environmental studies and know that I want to do something with it for my career. I was considering chemical/environmental engineering, as I love math too. However, a friend at Brown suggested something her friend is doing, taking environmental classes along with applied math.
I have been doing some research but wanted advice from some other people as well; any engineers that share my interests that can tell me a bit more about exactly what they do? Or people who have taken environment & applied math classes that could give me some info?
Thanks so much</p>