Carbon Scales: Collective Sense-making of Carbon Emissions from Food Production through Physical Data Representation

The climate impact of our food consumption is a key issue to sustainability. Yet understanding the food system and the impact it has can be difcult given its abstract nature. In this paper, we report on a Research through Design project aimed at designing and evaluating a data physicalization for supporting collective sense-making of the climate impact of food. Throughout the design process, we have explored the materiality of CO2 emissions and ways to design with less resource use. The resulting data physicalization, Carbon Scales, was evaluated in a three-week feld study with 27 participants. Our fndings show that collective sense-making can be enabled through interactive data physicalizations and that this can lead to carbon literacy. We expand on a) sustainability through design by arguing for the value of artifacts that let people stay in the interaction as this can support collective sense-making and b) sustainability in design by showcasing the value of designing with an interaction-frst and materials-second mindset.