Speculation is mounting that the government is struggling to secure the support it needs to pass cap-and-trade legislation
Founding member of Western Climate Initiative quits carbon trading scheme over economic fears
BP America, Caterpillar and Conoco end support; opponents claim climate law is dead in the water
Study challenges conventional view that the ETS has failed, hailing the scheme's profound impact on the European energy sector
Regional emissions trading schemes are springing up in China, India and Japan
Sulphur and nitrogen targeted by Clean Air Amendments
But horse trading to keep carbon trading goes on
Plans to raise more than $600bn through US carbon trading scheme make no appearance in latest budget
Former opposition leader Malcolm Turnbull set to defy party and back government in crucial climate bill vote
Judicial Review into inclusion of US airlines in EU emissions trading scheme to be referred to European Court of Justice