One of the central tenets of a worthwhile, rigorous and balanced education system is there is room for disagreement, discussion and debate; especially related to controversial issues where there are opposing views. 

Not when it comes to human-induced global warming.  For simply wanting to provide resources to schools questioning the link between carbon emissions and global warming the conservative activist group Advance Australia has been attacked and vilified. 

The Victorian education minister James Merlino argues Advance Australia is a “front for a group of ill-informed climate change deniers” and principals are told they should put “this rubbish where it belongs – in...