Cool: LED-based indoor farming that optimizes the lighting hours and wavelengths for each crop.
https://www.washingtonpost.com/lifestyle/high-tech-farmers-are-using-led-lights-in-ways-that-seem-to-border-on-science-fiction/2018/11/06/d965021a-e15b-11e8-8f5f-a55347f48762_graphic.html