Mark Lynas (born 1973) is a British author, journalist and environmental activist who focuses on climate change. He is a contributor to New Statesman, The Ecologist, Granta and Geographical magazines, and The Guardian and The Observer newspapers in the UK; he also worked on the film The Age of Stupid. He was born in Fiji, grew up in Peru and the United Kingdom and holds a degree in history and politics from the University of Edinburgh. He lives in Oxford, England. He has published several books including Six Degrees: Our Future on a Hotter Planet (2007) and The God Species: Saving the Planet in the Age of Humans (2011). He has stated "I think there is a 50–50 chance we can avoid a devastating rise in global temperature."
In 2004, Lynas' High Tide: The Truth About Our Climate Crisis was published by Macmillan Publishers on its Picador imprint. He has also contributed to a book entitled Fragile Earth: Views of a Changing World published by Collins, which presents before-and-after images of some of the natural changes which have happened to the world in recent years, including the Indian Ocean tsunami and Hurricane Katrina, alongside a bleak look at the effects of mankind's actions on the planet.
In January 2007, Lynas published Gem Carbon Counter, containing instructions to calculate people's personal carbon emissions and recommendations about how to reduce their impact on the atmosphere.