This from the article:
This issue is of critical importance to companies, particularly those with extremely carbon-intensive operations. In the wake of declining domestic coal consumption, Arch Coal (NYSE: ACI ) and Peabody Energy (NYSE: BTU ) have been looking for new markets for their carbon-heavy product. If exporting U.S. coal to overseas markets proceeds according to plan, the move will constitute one of the most significant global contributions to atmospheric carbon concentrations. Consider the effects on these companies if some of the proposals in this video become a reality.