He graduated from Oxford University with a First Class degree in Biological Sciences and completed his PhD at University College London in 2007. He now holds the Professorship in Science Communication at the University of Westminster. His research is in the field of astrobiology and the search for microbial life on Mars. Lewis has also held a STFC Science in Society Fellowship and is very active in delivering live events at schools and science festivals, working as a scientific consultant for the media, and has appeared in numerous TV documentaries and radio shows. He has won several awards for his science writing and outreach work and regularly freelance for newspapers and magazine articles. Additionally, he has also published four books: The Knowledge was a Sunday Times Book of the Year, and ORIGINS: How the Earth Made Us.