![Bill Berger's avatar](/system/users/avatars/000/038/077/thumb/highres_449009866.jpg?1550266574)
What's more ubiquitous than concrete aside from combustion? Embodied CO2 I think is the term but there's no database I could easily find to see what the CO2 emissions of a kg of one material vs another. Intuitively, products that are highly refined and complex (like laptops) must be highly carbon intensive.