An anonymous reader writes "At this point, greenhouse gas emissions, and humans' culpability for them, are as close to a fact as science can get. Researchers had assumed that humans' role in creating greenhouse gases began in during the Industrial Revolution. But Celia Sapart, from the Netherlands' Utrecht University, and her colleagues have found evidence that humans have played a role in the creation of greenhouse gas emissions since the time of the Roman Empire.
What's more, they believe that their findings may mean that scientists should rethink climate change models that did not take human involvement into consideration before the nineteenth century."Link to Original Source