Can't believe I've missed this thread previously!!!!
(yes, Harry Chapin's brother)
#1 - Been doing GREAT kids music for years (and it's the type of stuff that mom & dad won't get sick of in the car, unlike, say Barney or Raffi)
#2 - Also been focused on the environment LONG before "going green" was cool. I mean with an entire album titled "Mother Earth" (and partcularly a song on there called "Good Garbage"), how can you go wrong?
Check it out. It's what you're looking for! (in response to the original post... although I am probably waaaay late with my answer.... very sorry!)