Inter Press Service: Will the world take the easy step to phase out "super" greenhouse gases – hydrofluorocarbons (HFCs) – using the existing Montreal Protocol ozone treaty? Doing so would be equivalent to preventing the release of 118 to 224 billion metric tonnes of carbon dioxide by 2050, according to a report by the Environmental Investigation Agency. That’s vitally important. The latest science shows humanity cannot put more than another 700 billion tonnes into the atmosphere over the next 40 years …