One can consider Naomi Klein as the American representative of the Degrowth Movement. This video was made apropos of her new book in which she claims that it is either us taking the upper hand and carry about a radical change or there is going to be a series of uncontrolled radical changes in our physical world. Anyways, only one thing is for sure: this current state is going to change either the former or the latter way.
It was indeed a great experience to get in touch with them when we offered our voluntary contribution.
There should be a documentary coming as well, we might translate that one too