All the top green business news from around the world this week, including fresh WHO air pollution guidelines and global coal, methane and HFC commitments

UK Prime Minister delivers passionate paean to green economy in major climate speech at UN General Assembly

Hopes grow that COP26 Climate Summit could deliver a breakthrough, after two of the world's biggest emitters deliver key climate pledges

BFC report maps out a framework for the UK fashion industry to adopt a circular ecosystem and reduce the number of new clothes sold by 50 per cent

Inaugural UK sovereign green bond attracts huge investor demand, with second retail savings bond set to launch in October

Skyrocketing global fossil gas costs underscore urgent need to ramp up renewables capacity in UK, according to Ember

The Taskforce on Scaling Voluntary Carbon Markets announces new independent governance body to oversee development of carbon offset credit principles

British Prime Minister voices fears that getting major economies to deliver on $100bn climate finance pledge to vulnerable nations will be 'tough' going

Firms signed up to 2030 Net Zero Carbon Buildings Commitment must take account of embodied CO2 and lifecycle impacts of construction materials

New report from the Climate Group and Oliver Wyman presents a 'blueprint for a commercially smart climate transition'