A greenhouse gas 24,000 times more powerful than carbon dioxide is being driven up by China’s growing electricity needs, according to a new study. CO2 is the number one greenhouse gas on our radar for good reason. A gas naturally present in the atmosphere but turbocharged by humans’ fossil fuel combustion, it is the single biggest contributor to the climate crisis. But an overload of carbon isn’t the only gas threatening Earth’s climate; international agreements cover a number of other gases including a man-made grouping of fluorinated (F) gases. Sulphur hexafluoride (SF6) falls within this po…