The airline industry's mouthpiece called Monday for uniform global measures by 2020 to curb all aircraft carbon emissions, warning that a patchwork of competing proposals could emerge otherwise.
The European Union said Wednesday that China, the world's largest carbon emitter, was willing to cooperate more closely to address climate change worldwide ahead of a key global pact due in 2015.
Australian Prime Minister Kevin Rudd on Tuesday announced the country's divisive fixed-price carbon tax will be scrapped a year ahead of schedule in favour of a market-driven emissions trading scheme.
Key greenhouse gas emitter Australia on Sunday announced it will scrap its carbon tax in favour of an emissions trading scheme that puts a limit on pollution from 2014, a year earlier than planned.
Australia's key strategy to tackle climate change is looking shaky, after another price drop on the world's biggest carbon market raised fresh doubts about the future of emissions trading schemes.
The European Union executive on Monday offered to "stop the clock" on its controversial carbon tax on air travel by suspending the measure for a year on flights to and from non-European nations.
The Australian government Wednesday walked away from talks to close down some of the nation's highest-polluting, coal-fired, power stations, in a move condemned by its key coalition partner the Greens.
Australia announced Tuesday it would link its deeply contested emissions trading scheme with the European Union's from mid-2015 in an effort to combat climate change.
The European Commission made a bid Wednesday to fix the EU's sickly Emissions Trading Scheme, calling for a delay in the auction timetable over 2013 to 2020 in order to prop up prices.
The European Union should scrap a controversial carbon tax on air travel and seek a global solution to the emissions problem, the global aviation industry's chief said on Wednesday.