Northwestern is a strong school for journalism and all the sciences. However Greek life is very very strong at Northwestern and a whopping 40% of students join a fraternity or sorority. Ditto on Vanderbilt, 42% join a Greek house. Notre Dame might be a better match, if you want to avoid Greek life.
Boston College has unofficial Greek houses, and more conservative Catholic school, with a strong business college.
I don’t know which school you attend, but if its Penn State, I think its only 12% of the student body? How is it you cannot avoid Greek life there? I just tried to look that up, I know its large there, but Northwestern and Vandy are both more pervasively Greek, I believe. Notre Dame offers no fraternities or sororities, only single sex dorms. There are rules about visitation between boys and girls at Notre Dame, so be sure you are comfortable with that. Notre Dame is well known for its ethical business college and English program.
Look for a program in environmental science if you want to minor in that. Look for a large English or journalism program.