A new interactive tool from climate scientists, called the Carbon Impacts Tracer, estimates what one megatonne of CO2 emissions means in real-world harm. It draws on peer-reviewed studies to translate emissions into things like crop losses, heat stress, poverty, and glacier melt. The Guardian used the tool to examine a proposed coalmine expansion in Australia's Hunter Valley. Releasing 809 million tonnes of emissions, the model estimates 107 deaths in Europe, 41,800 more people in extreme poverty, 19.4 square km of additional glacier loss, and 38.8 million extra heavy labor hours lost each year. For anyone tracking carbon projects, offsets, or fossil fuel approval decisions, this is a concrete way to connect tonnage to consequences. It also makes the case that no single emission source is too small to matter, since every tonne adds to warming.
