Oghenechovwe Donald Ekpeki, 'O2 Arena' (2021).
Online here. Features what could be a kind of oxygen-based currency, the O2 credit. Payments are denominated in Os. Naming the currency in this way emphasises that drawing breath has become commodified, although roughly the same story could be told using naira or some other unit. We could speculate that perhaps the O currency is redeemable by the central bank for a certain quantity of oxygen.
