Dr Rosaly Lopes is a principal scientist at NASA's Jet Propulsion Laboratory, and Lead Scientist for Geophysics and Planetary Geosciences. In 2006, she was honoured by Guinness World Records as the discoverer of the most active volcanoes anywhere. She is author of The Volcano Adventure Guide.
James Adams has narrated over a hundred fiction and non-fiction audiobooks. His distinctive British accent has been sought after for books that range from Conan Doyle’s Professor Challenger series to biographies, autobiographies, and works of Christian philosophy. He also hosted a morning news show on public radio, and has written 14 bestselling books of fiction and nonfiction that have been translated into 12 languages.