jats:pUrban political ecology now finds itself at a crossroads between gradual marginalization or renewed intellectual impetus. Despite some recent critical re-evaluations of the field, there remain a series of conceptual tensions that have only been partially explored. I consider six issues in particular: the uncertain relations between urban political ecology and the biophysical sciences; the emergence of extended conceptions of agency and subjectivity; the redefinition of space, scale, and the urban realm; renewed interest in urban epidemiology; the delineation of urban ecological imaginaries; and finally, the emergence of evidentiary materialism as an alternative posthuman configuration to new materialist ontologies. I conclude that a conceptually enriched urban political ecology could play an enhanced role in critical environmental research.</jats:p>