Biography
In 1989, being 12 years old, he hosted the radio programme Radio Heraldo. Six years later he founded the journal ''Año Cero''. He is editor consultant of the monthly magazine '':es:Más Allá de la Ciencia, Más Allá de la Ciencia'' (''Beyond Science'') distributed in Spain and Latin America and he participates in several radio and television programs. During the last years, he has concentrated on writing about purported ancient mysteries. For years, Sierra has been working with people like Graham Hancock and Robert Bauval attempting to demonstrate the existence of a ''Golden Age'' of humanity. His hypothesis holds that this ''Golden Age'' was extinguished about 10,500 years ago, and it was the origin of all the known civilisations.Career
In 1995 he published ''Roswell: Secreto de Estado'', about the Roswell incident, where he analysed the case. He became the first Spaniard to be in the Top Ten of best sellers in United States. His 2006 novel ''The Secret Supper'' was in the top ten of The New York Times Best Seller list and has been published in 42 countries. ''The Lady in Blue'' was published in 2007. On 20 December 2017 it was released the documentary fiction ''Otros mundos'' by Cero (TV channel), #0, which is about the great mysteries in the world. On 22 December 2019 it was released the second season.Books
*''El fuego invisible'' (2017) *''La pirámide inmortal'' (2014) *''El maestro del Prado'' (Planeta, 2013) *''El ángel perdido'' (Planeta, 2011) *''La cena secreta'' (Plaza & Janés 2004) *''El secreto egipcio de Napoleón'' (La Esfera de los Libros, 2002) *''Las puertas templarias'' (Martínez Roca, 2000) *''La dama azul'' (Martínez Roca, 1998)Essays
*''La ruta prohibida y otros enigmas de la historia'' (Planeta, 2007) *''En busca de la Edad de Oro'' (Plaza & Janés, 2000) *''La España extraña'' (EDAF, 1997), in collaboration with :es:Jesús Callejo, Jesús Callejo *''Roswell: secreto de Estado'' (EDAF, 1995)Collaborations
*He participated in the collective work ''Relatos Ferroviarios Sobre Raíles'' (''Imagine Ediciones'', 2003) *He directed and prologued the historical intrigue novels collection ''La Cámara Secreta'' (col. Nº 80) for ''Círculo de Lectores'' (2003–2004).Prizes
*2004: Premio de Novela Ciudad de Torrevieja, finalist, ''La Cena Secreta''. * 2017: Cruz de San Jorge from the Teruel deputation. *2017: Premio Planeta de Novela, winner, ''El fuego invisible'' * 2018: Hijo Predilecto de Teruel.Radio
*Collaborator in '':es:La Rosa de los Vientos, La Rosa de los Vientos'', Onda Cero Radio (2004–2006). *Collaborator in ''Herrera en la onda'' (before ''Herrera y punto''), ''Onda Cero Radio'' (2002–2003). *Collaborator in ''Milenio 3'', Cadena SER Radio (2002). *Consultant in ''El Callejero'', ''Onda Cero Radio'' (1998). *Consultant in ''Viva la Radio'', ''Radio Voz'' (1996–1998). *Consultant in ''La Ventana Indiscreta'', ''Cadena SER Radio'' (1989). *Consultant in ''Espacio en Blanco'', ''Radio Nacional de España'' (1987–1988). *Director and presenter of ''La Otra Ciencia'' and ''Mare Nostrum'', ''Radio Nueva'' (1986–1988).Television
*Director and TV presenter of ''El Otro Lado de la Realidad'', Telemadrid (2004–2005). *Collaborator in ''Cada Día'', Antena 3 TV (2005). *Collaborator in ''Crónicas marcianas'', Telecinco (1999–2004). *Editor of ''Otra Dimensión'', ''Telecinco'' (1993).Press
*Editor consultant of the magazine Más Allá de la Ciencia (''M.C. Ediciones'', 2005). *Editor Director of ''Revista de Arqueología'' (''MC Ediciones'', 2002), the most important publication of its genre in Spain. *Director of the magazine ''Más Allá de la Ciencia'' (''M.C. Ediciones'', 1998). He carried out the change of format, readjusts of contents and image, since January 1999. *Coordinator of the special numbers of magazine ''Más Allá de la Ciencia'', ''Grandes enigmas de Europa y América'', ''Pirámides del mundo'', ''Grandes misterios de la Tierra'', ''Misterios de Egipto'', among others. *Assistant director of the magazine ''Más Allá de la Ciencia'' (''J.C. Ediciones'', 1995–1998). *International coordinator of magazine ''Año Cero'' (''América Ibérica'', 1994). *Editor of magazine ''Más Allá de la Ciencia'' (''Heptada'', 1993). *Co-founder of the magazine ''Año Cero'' (''Hobby Press'' 1990).Editorial
*Consultant of the collection ''Huellas Perdidas'' de ''Grijalbo Mondadori'' (2000–2001). *Editor consultant of the collection ''Ediciones Martínez Roca'' (2001).References
External links
* (in English)