Here's a site to get youngsters interested in ecology, the environment and the need for sustainability.
![Cheerful](images/smilies/cheerful.gif)
I know it's primarily aimed at older children, but I feel that there is a lot of valuable information that can be used at younger ages.
![Yes](images/smilies/yes.gif)
Also, there is a good list of links, that I haven't had time to check through yet!
Young People's Trust