10 Announced Movies That Mysteriously Disappeared

Away from acting, environmental activism is one of Leonardo DiCaprio's biggest passions in life.

He established his own organisation - the Leonardo DiCaprio Foundation - dedicated to that cause, he's narrated several nature documentaries, and he even slipped in a climate change "call to arms" during his Oscar victory speech in 2016.

So when it was announced that he was set to produce an adaptation of the Captain Planet cartoon series - centred on a superhero who's dedicated to saving the environment - it seemed like a perfect marriage of artist and material.

Sadly though, the marriage didn't last long. Even though writer Glen Powell discussed the script in a 2018 interview (he called it "dark and irreverent"), that's the last we heard of the project.

Considering DiCaprio's passion for the pro-environment message of this property (as well as the current popularity of superhero movies), it's strange that the project didn't come together. Captain Planet may be able to put out forest fires, but clearly, he cannot escape development hell.