Octavia Butler in a 2005 interview:
"I wrote the two Parable books back in the '90s. And they are books about, as I said, what happens because we don't trouble to correct some of the problems that we’re brewing for ourselves right now. Global warming is one of those problems."
https://www.democracynow.org/2005/11/11/science_fiction_writer_octavia_butler_on
