Your review of Matthew Glass’ Ultimatum (London: Atlantic Books, 2009) is brilliant (“Tidal Fear,” June 6, 2009). Set in 2032, the book paints the imminent eco-disaster: large swathes of the American coast, as well as East Asia, are under water. Hurricanes ravage the American South, and wildfires rage through the West. New cities are being planned to house many millions of Americans in search of higher ground. The threat of global economic disaster looms. Well-read and talented, Glass rises to the challenge: “His portrait of the effects of global warming is as vivid as it is dark.” The book “does a better job of convincing the reader about the price the world will pay for its complacency about global warming than any international grandstanding or dry scientific report.” But your very last sentence is a wonder of the book-review genre: “And the ending is brilliant.” Congratulations, but no cigar. Your review of Ultimatum is perfectly enough for this happy reader.