Marta Cerù, is a native Italian from the Rome area but she has spent all her summers since childhood in the Upper Tiber Valley (San Sepolcro).

She has a degree in Physics and a Masters in Science Journalism. She is the author of a book for children about the history of life on our planet entitled “ I Dinosauri Dopo Cena” (The Dinosaurs After Dinner) and has published a hundred articles about science for laypeople.

Breon O'Farrell is the founder of Philosophy Dog Training in NYC.

He is the author of the world's most beautiful dog training book "Philosophy Dog. The art of living with man's best friend" , which features photos from many of the biggest names in the world of fashion photography.