Tim Flach is the author of Dogs, Equus, and More than Human and an honorary fellow of the Royal Photographic Society. Dr. Jonathan Baillie is chief scientist of the National Geographic Society and co-chair of an IUCN National Red List Working Group. Flach and Baillie live in London. Sam Wells is a writer with a passion for conservation and a background in filmmaking. He has worked closely with Tim Flach and with conservation specialists around the world during the development of Endangered. Wells is from Brixton, South London.