Natural Fuse is city-wide network of units each consisting of a plant, an electrical device (a lamp or radio), a plug, a fuse and water bottles. Designed by artist Usman Haque, the self-sustinaning network of units acts as a very tangible and didactic means for exploring our impact on the global environment in a local way. The units, given to individual householders, are are connected to each other via sensors and a web-based platform. The plants’ individual and collective survival depends on the actions of the set of owners in the way they use the electrical devices that are connected to them. A little like a carbon-trading scheme in reverse, the ability of the network of plants to store carbon is the limiting factor on the extent to which the energy consuming devices, for example, can be switched on. Interestingly, users can also opt to be selfish by continuing to use the device beyond the carrying capacity of the system. If they do so, however, they will kill someone else’s plant. An intricate lesson in science and morality, Usman’s work is still actively employed by a few selfless survivors in New York, USA, San Sebastien, Spain and Sydney, Australia.