How to Read Water: Clues & Patterns from Puddles to the Sea

Tristan Gooley is a writer, navigator and explorer. He has led expeditions on five continents, spent time with the Tuareg, Bedouin and Dayak in some of the remotest places on Earth and pioneered a renaissance in the rare art of natural navigation. Tristan is the only living person to have both flown solo and sailed single-handed across the Atlantic. He is a Fellow of the Royal Geographical Society and the Royal Institute of Navigation and Vice Chairman of the UK's largest independent travel company, Trailfinders. He lives in West Sussex.

Jeff Harding is an American actor living in the UK. He is remembered for playing Orrin Hudson in the 1980s BBC drama series Howards' Way, as well as his appearances on The Fast Show and Father Ted. He also appeared in the 1990s remake of The Tomorrow People and in the BBC docudrama series Seven Wonders of the Industrial World. Jeff voices Vincent Meis in the video game The Witcher and is well-known for narrating popular books, including Dan Brown’s The Da Vinci Code and Secrets of the Code, as well as Robert Ludlum’s The Bourne Identity.