Professor Bruno Latour delivers the Gifford Lecture series entitled "Facing Gaia. A new enquiry into Natural Religion". Lecture 5: War of the Worlds: Humans against Earthbound In the absence of any Providence to settle matters of concern — and thus of nature, its barely disguised substitute — no peaceful resolution of Gaian conflicts can be expected. The recognition of a state of war and the designation of enmity is indispensable if a state of diplomacy is later to be reached. Under the pressure of so many apocalyptic injunctions, what is a Gaian political theology? Recorded on Tuesday 26 February 2013 at St Cecilia's Hall, the University of Edinburgh.