An approach based on participatory learning and action, and an approach more driven for solutions, with good examples to discuss from, is what the world need, to acually do something for real.
I recommend the book Communication for Another Development- Listening Before Telling. by Windy Quarry and Ricardo Raírez
Posts at this blog about better technics for environmental action:
Communication for another development, about the book
New Face, another book about communication; Facewoork
Environmental awareness: attitude or action?
Complexity of environmental problems
Communicate better, video with Solitaire Townsend
Keep the flow
Creations of groups and exclusion of others, personal discussion about
The disadvantages of lectures
Main point, short
Social construction of reality, book from 1966
Daniel Gilbert on climate change-with some pungent formulations
The secret powers of time, video- great perspective on time perspectives
Social ground for sustainable development