Financial Times: Some of the worlds leading producers of refrigerants are threatening to release large amounts of a byproduct that is one of the most potent greenhouse gases, raising the spectre of a climate bomb. The companies, the majority of them in China, argue that a ban on trading of climate credits for the incineration of HFC-23 makes it no longer financially viable for them to destroy the gas, which is 14,800 times more damaging to the climate than CO2. The warning, highlighted in a report the non-governmental...