My son did a great deal of research while looking at science programs for his undergrad and more recently for his Masters. He said he'd be more than willing to give you his email to start a dialogue with your son and possibly answer some questions about what he found while searching schools. My son did mention that Environmental science has many different degrees (ie advocacy, research, legal etc) and depending on what direction he wants to go would help determine the best programs and schools. My son is 22 and very easy to talk to.
Has he looked into NC Wilmington?