Alan Whitehead MP investigates the government's definition of what constitutes a green tax
Chair of Energy and Climate Committee says the tax could be used to encourage compliance with EU efforts to cut aviation emissions
Ahead of critical talks and despite pledge for new treaty by 2012, biggest economies privately admit likelihood of long delay
Trade body chief says action could be taken before the end of the year
Chinese official says country will stop destroying harmful greenhouse gas if carbon credits it generates are outlawed
Battle over bringing aviation emissions into Europe's cap and trade scheme heats up with declaration in Montreal
Opposition leader makes 'blood oath' to repeal controversial carbon tax
26 nations expected to sign resolution calling for exclusion of non-EU airlines from planned emissions levies
House of Representatives approves bill to fine carriers that comply with EU plans for aviation carbon trading
Regulators approve long-awaited state-wide emissions trading scheme