What about the Environmental Sciences program (
Columbia College - Bachelor of Science in Environmental Science: Environmental Science Degree - Bachelor of Science in Environmental Science Degree Requirements) at Columbia College (located in Columbia, Missouri)? It provides a broad look at all sciences and prepares students for jobs in private companies as well as government agencies. The degree program doesn't require much math, but instead focuses on sciences like biology, zoology, ecology and chemistry. Also, Columbia College features small class sizes that will make your son's education much more valuable. If that sounds like something he would like to do, you should suggest Columbia College to him!
For you, Columbia College is quite affordable (
Columbia College Day Campus - Tuition & Fees). They feature something called "fixed rate tuition," which means you would pay the same amount of tuition for all four (or 5!) years he would be at the college.
I am a twin myself. Are your boys thinking about going to the same college or do they have their own independent searches going? I know when I chose my college, where my brother was thinking about going was a big factor in where I wanted to go. We basically searched together. It's an important factor to think about!