This softcover edition is in near fine condition with no marks or tears and shows absolutely minimal shelf wear. The pages are tight, appear unread, and the book is tight, square, and unmarked. Food of the Gods: The Search for the Original Tree of Knowledge – A Radical History of Plants, Drugs, and Human Evolution is a non-fiction book by ethnobotanist Terence McKenna, first published in 1992. The book examines the historical relationship between humans and psychoactive plants, proposing a radical hypothesis about their potential role in human evolution, culture, and consciousness.