When for some reason (weather, virus, fungus, shortage of partners)a plant or animal changes its sex. eg: Corn (it is suspected this is how modern corn came to be), frogs

Solarpunk is a movement focused on a positive, ecological vision for a future where technology is used for human-centric and ecocentric purposes. It is a literary, artistic and aesthetic sub-genre and is also closely tied to eco-political activism. Solarpunk narratives have a distinctly positive and utopian foundation in contrast to the often dystopian visions found within other "punk" science fiction genres.