Cherry Lewis has had a life-long passion for rocks and fossils. After Drama College and running her own business for several years, she finally decided to indulge her passion and studied geology as a mature student at Bristol University. Her degree was succeeded by a PhD on Tibetan granites and post-doctoral research at University College London, which led to a career in the oil industry. Whilst writing her thesis she discovered the work of Arthur Holmes and became captivated by the man who pioneered the way towards determining the true age of the Earth.