Artificial sun will be used for vegetation



Vladimir Odoevsky : Philosopher, writer
"The whole garden was full of rare plants and lit by a beautiful electrical device similar to the sun. They told me that it not only lights the garden, but also encourages the growth of the trees and plants in some chemical way. In fact it was the most luxuriant vegetation I’ve ever seen."


"The Year 4338: Petersburg Letters"


http://www.feeldothink.org/the-year-4338-translation-from-russian/#0.5.%20%20%20%20Fourth%20Letter|outline