Thanks for your thoughtful question and for sharing about your interest in being an “environmental justice warrior.”
My husband is an Environmental Engineer so I’m sharing a few resources and thoughts you might also want to consider in your search for internships.
Northrop Grumman has internships. Check out this link https://www.northropgrumman.com/careers/Students-Entry-Level/Pages/Internships.aspx
Have you also thought of how technology and innovation can strengthen the work being done in environmental areas? You may also want to check out internship opportunities at https://www.att.jobs/students
And in Chicago, there’s a great non-profit called Alliance for the Great Lakes. They are tireless advocates for our environment and the Great Lakes. I do believe they have summer internship programs. https://greatlakes.org/about/jobs/
As far as timing, there may be even more internship opportunities posted or shared online after the first of the year or closer to Springtime as many companies post internships for summer.
Best wishes to you for success in your career and educational goals.
Melisa recommends the following next steps:
This is an awesome career option to make a real difference in our environment and our communities and sustainability of the planet.
All these links below have opportunities,
I would also encourage you to find a mentor in this field so that he/she can guide you about options that best suits your area of interest.