Six Degrees: Our Future on a Hotter Planet is a 2007 non-fiction book by author Mark Lynas about global warming. The book looks and attempts to summarize results from scientific papers on climate change.
The second chapter describes the effects of two degrees average temperature and so forth until Chapter 6 which shows the expected effects of an increase of six Celsius degrees (6 °C) average global temperature. The effects are also compared to paleoclimatic studies, with six degrees of warming compared back to the Cretaceous. [citation needed]
In April 2020, the author published a rewritten and updated version of the book: Our Final Warning: Six Degrees of Climate Emergency (ISBN978-0008308551).[3]