Caroline Lucas says the government is dragging its heels on banning HFC gases considered thousands of times more damaging than CO2
US hails new deal to phase out potent hydrofluorocarbon greenhouse gases as Poland sets out its ambitions for Warsaw climate summit
HFC-free technology designed to slash emissions from supermarket giant's fleet
But automaker Daimler argues cleaner gas is more likely to catch fire
Refrigerant producers threatening to release huge amounts of HFC-23 after ban on trading credits generated by destroying the gas
Presidents Barack Obama and Xi Jinping end summit with deal to cooperate on limiting the production and consumption of HFC gases
...but report expresses concern over Tesco and Asda’s approach to HFC-free chillers
Credits derived from HFC and adipic acid projects made up 84 per cent of all CERs handed in last year
US contributes $12m to new UN project to cut substances that accelerate climate change and damage health
Jane Burston hears UN climate chief Christiana Figueres bemoan how much needs to be achieved in a fortnight