> The climate effects of burning coal were well known in the scientific community as early as 1856 (Eunice Foote) or 1859 (John Tyndall). So about 150 to 200 y

> The climate effects of burning coal were well known in the scientific community as early as 1856 (Eunice Foote) or 1859 (John Tyndall). So about 150 to 200 years ago... > Deliberate misinformation from fossil fuel companies has been around since at least 1991 when they published a film about climate change, "A Climate of Change." Exxon has actively fought to hide the dangers of climate change since the early 1980s. I think the film you're referring to was called "A Climate of Concern."