Develop the idea + make more tasks

I agree with Kris S. Made another shot because of the Tasks.

I don't really think that one can make a decent documentary using this material. Maybe you don't even think so yourself.

A documentary should, in my opinion, start with thinking more about the concepts and dialectics of the subject matter which then should be visualized / collected in order to get the actual documentary film.

I'd suggest this:

A) You make a summary film based on the lectures. So not really a documentary but just squeezing this material into a more tight package.

OR

B) You make two or more Tasks here to think about the themes and how to dramatize it. What kind of other material than the lectures should be needed to really think about this.

I myself think that the dialectic between deep ecology v.s. the hopes of the future and hopes of the future v.s. the threat of climate change could make for a few pointers.