Liquid metals are an emerging class of compounds that are liquid close to room temperature yet exhibit metallic conductivity. Liquid metals have found application in the design of flexible and reconfigurable electronics and more recently emerged as a platform for the synthesis of nano-structures as well as a unique class of catalysts that is extraordinarily resilient towards deactivation. In comparison to other liquids such as covalent solvents and ionic liquids, comparatively little is known about the chemistry that occurs inside molten metals. This talk covers the emerging picture of liquid metal chemistry and will report some of our most recent results in the space of CO2 activation with a specific focus on the application of liquid metals in the reduction of CO2 to solid carbon (graphene and other carbon products), where the liquid metal acts as a reducing agent that activates CO2 enabling a chemical looping process. Following our initial report[1], this talk will cover the scale up from milligram quantities to many grams per day, discussing core challenges that lie ahead for this negative emissions technology.