Who said what in the world of green business this week?
British prime minister writes to Julia Gillard welcoming carbon tax policy, as New Zealand reveals success of emissions trading scheme
New figures show environmental taxes have fallen as a proportion of overall tax burden
Resolute backbench MP reveals plan to help drive green policies up the political agenda
A$23 a tonne carbon tax confirmed as prime minister attempts to sell controversial levy to voters
Australian Prime Minister ditches plan to target 1,000 companies, and says carbon tax will affect only 500 firms
MPs criticise Treasury's use of fiscal regime to raise revenues rather than change behaviour
Details of controversial levy to be announced on Sunday, alongside plans for new clean tech investment fund