COVID-19

Introduction

Air quality is neither a stable material phenomenon, nor form of knowledge. What constitutes good or bad air seemingly consolidates in maps and graphs of gaseous or particle concentrations, in standards and thresholds, and in ‘metrological regimes’ of measurement and organized governance (Barry, 2002; Calvillo, 2018). However, air quality’s stability is illusory.

A ghostly encounter

What is that voice? Whose voice? And to whom is it addressed? A voice almost sepulchral. A ghost, an encounter. How are we surrounded by voices and ghosts like that? What can we learn from them? Let us go through this encounter with a ghost named Derrida.

Introduction