Captain Gregory or commonly referred to as Captain Greg, is the historically official term, of a "doughnut". The hole in the doughnut was created by Captain Gregory when he had skewered a doughnut (with no hole) onto the spoke of his wheel of his ship, thus creating, the hole in the doughnut. Therefore, common belief suggest that the term referring to a holed doughnut should be Captain Gregory, or Captain Greg, not just doughnut.

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.