Introduction: An Epistemological Transition -- Gaia Discourse -- A Paradigm Shift --Thinkers of Gaia -- Neocybernetics of Gaia -- The Systems Counterculture -- The Whole Earth Network -- The Lindisfarne Connection -- Margulis and Autopoiesis -- Gaian Inquiries -- The Planetary Imaginary -- Planetary Immunity -- Astrobiology and the Anthropocene-- Expressions of gratitude Incluye referencias Bibliográficas