Much of the PhD is about reading books, articles, newspapers, summarising, synthesizing, critically reflecting upon it, and then eventually also about contributing one’s own findings.
Some interesting books:
To Life! Eco Art in Pursuit of a Sustainable Planet by Laura Weintraub
Against the Anthropocene. Visual Culture and Environment Today by TJ Demos
Art in the Anthropocene : Encounters among Aesthetics, Politics, Environments and Epistemologies by Davis & Turpin