We haven't come up with the idea of solar power yet, but there is someone that says the Earth is about to reach the point where it can no longer sustain us.
[She's very solemn as she speaks.] There is...a war going on currently, between two groups of people, one that wants to 'save the Earth' by destroying all the humans, and one that wishes to protect humans and look for an alternative method to save the Earth.
[She gives him a tiny smile.] It's not quite the same, but there were a few things in what you said that reminded me.