Wolf Achievement 7 – Our Living World – is all about conservation. For requirement e, Wolf Cub Scouts are supposed to read some stories:
With an adult, find three stories that tell how people are protecting our world. Read and discuss them together.
For this requirement, I like to use stories about youth who are participating in conservation projects. I think it makes it more interesting to the Cub Scouts if they see that young people can make a difference.
You can find a few stories about youth and their conservation projects in an article at Earth911.com. So check them out and see if they would be appropriate for your Wolves. Who knows, one of them might be inspired to start their own conservation project.