How life existed is the Mother of all questions, and Zecharia Sitchin, a noted Russian linguist and theorist, is the Father of all answers regarding how life on this age-old planet evolved and why. The book, The 12th Planet, is the arcane source of everything. In it, Sitchin explicitly unfolds the corroborating facts about the existence of the Nefilim, the Gods who daughtered the mortal women. Everything that we need to know is here, but it would be better to complete the entire Earth Series collection by the said author in order for us to have an idea why we are here on this realty as we know it. Other books within the same category non fiction   My Father's Son by Farley Mowat Russian Experiences: Life in the Former USSR and Post-Soviet Russia by The Raven and Marie Claire The Hotel by Jeffrey Robinson