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Here is a pdf file about the study: https://files.catbox.moe/d8u4qy.pdf I have nothing to do with gardening but I would like to hear your thoughts on this. This comes from the alternative theories about our history. Actually, this is the link to the video where I found it: https://files.catbox.moe/cfrucb.mp4 The experiment part starts at 4:00. Before that there is some talk about global warming and the sun. The channel is called Static in the attic if anybody would like to check it out.