Montreal Protocol

Governments promise to join forces to stamp out use of banned pollutant following discovery of underground use in China

Latest assessment of the state of the ozone layer suggests it is on track to be fully repaired by the 2060s

Illegal production of CFC-11 in China has a climate impact equivalent to 16-20 coal power plants, the Environmental Investigation Agency estimates

UK becomes one of the first countries in the world to fully ratify amendment to Montreal Protocol extending crackdown on HFCs to cooling technologies

In drive to rid fridges and other products of harmful greenhouse gases, retailers must not lose focus on delivering energy efficiency, engineering firm Emerson advises

The restoration of the ozone hole, which blocks harmful radiation, will be delayed by decades if fast-rising emissions of dichloromethane are not curbed