Professor Bruno Latour delivers the Gifford Lecture series entitled "Facing Gaia. A new enquiry into Natural Religion". Lecture 3: The Puzzling Face of a Secular Gaia In spite of its reputation, Gaia is not half science and half religion. It offers a much more enigmatic set of features that redistribute agencies in all possible ways (as does this most enigmatic term "anthropocene"). Thus, it is far from clear what it means to "face Gaia". It might require us to envisage it very differently from the various divinities of the past (including those derived from nature). Recorded on Thursday 21 February 2013 at St Cecilia's Hall, the University of Edinburgh.