Famous тракат "Этногенез and biosphere of Earth" is the fundamental labour of prominent home historian, geographer and philosopher Leo Nikolaevich Гумилева, sanctified to the problem of origin and mutual relations of ethnoss on Earth. Investigating the dynamics of motion of people, in search of the historical identity of entering into conflicts with an environment, Гумилев collected and processed an enormous amount scientific and culturological data. In this unique book that an author considered the main work translated into many languages, set forth and the substantive provisions of worked out Л.Н are developed in detail.Гумилевым of theory of этногенеза and studies about пассионарности.