I have worked in a public policy area that touches on environmental policy for a good part of my career. While majors in the area are new, the field has been around for a long time and most of the people who work in it majored in something that is not obvious. I was a chemical engineer undergrad and then got an MBA. My coworker was a political science major with a law degree. Other people I work with started in Finance or economics. There are a lot of mechanical engineers working in the field too. Bottom line is that in order to work in this field you do not need an undergrad that covers all the aspects so don’t feel you have to limit yourself to schools that have exactly the right major.
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