The Environmental Protection Agency (EPA) is set to withdraw its approval for Chevron to produce 18 plastic-based fuels, some of which have been identified as having a significant cancer risk. This decision follows an investigation by ProPublica and the Guardian, which revealed that an internal assessment by the EPA raised serious concerns about the potential health impacts of these fuels. In a recent court filing, the EPA expressed "substantial concerns" that the original approval may have been granted in error. The agency had previously authorized a Chevron refinery in Mississippi to manufacture these chemicals in 2022 as part of a "climate-friendly" initiative aimed at promoting alternatives to petroleum. The EPA's reconsideration of this approval highlights the ongoing scrutiny of the environmental and health implications of new chemical products, particularly those derived from plastics.