What to do with digital writing?

I would like to have my environmental science class create blogs to discuss current environmental issues. I would also like to have students create shared workspace for doing research on environmental topics. I also like the idea of the role playing that was mentioned in the reading. I could assign a controversial topic and then assign roles for students to play.  I especially like the participatory nature of digital writing.  I would like my students to become participating citizens concerning environmental issues.

I would like to have students listen to and create their own podcasts concerning environmental issues.

Science podcast