"The Green Millennium" by Fritz Leiber is a science fiction novel that transports the reader to the future, to a distant and troubled era. The main character, agent Oliver Quink, finds himself in a city ruled by amazing creatures - Giants, who control all life and death. Through a series of exciting events, Quink uncovers the secret of the Green Millennium that could change the course of history. The author skillfully combined elements of science, philosophy and the adventure genre, creating an exciting and unpredictable plot. "Green Millennium" is a book that will leave you enthralled from the first to the last page, provoking you to think about the future of humanity and the limits of its possibilities.