My dream is to make gardens under geodesic domes. In UK there is Eden project with 2 domes: one has mediterranean climate and another tropical. Imagine being able to grow mangoes and pineapples almost anywhere (it maybe too expensive in some climates, but maybe just growing strawberries there would be nice). https://www.youtube.com/watch?v=MWr67v620kY

I'd love to figure out how to do this in such a way that some or all of the warmth for them could come from waste-heat sources. Seems like such a waste to build a dome for growing local food and then have to heat it through the night with conventional fuels.

On a side note, check out forest gardening, namely "Plants for a future" is an excellent reference/book pfaf.orgyou, the author whom I had the luck to meet had a "huge" garden nearby in Cornwall