Scientists have developed the Carbon Impacts Tracer, a tool that estimates the human and environmental damage from individual coal, gas, and oil projects. It connects a project's expected CO2 emissions to extra warming, then to outcomes such as heat-related deaths, crop loss, melting glaciers, and coral bleaching. The goal is to challenge the argument that any single fossil fuel project is too small to matter. The tool gained attention after researchers applied it to Western Australia's Scarborough gas project. They estimated the project could expose 516,000 more people to unprecedented heat, contribute to 484 additional heat-related deaths in Europe by 2100, and drive further coral colony losses on the Great Barrier Reef. Communities, governments, insurers, and legal teams could use the results as evidence, though the tool does not assign legal responsibility. Current coverage is limited to a handful of impact categories, so it is not a full cost benefit analysis. Still, it marks a shift toward project level carbon accountability and gives regulators and courts a way to quantify consequences that were previously treated as diffuse.
