Though climate science doubters do admit that world temperatures are changing, they say that warming has actually stabilised in the past decade.
Emissions trading scheme (ETS) opponents also do not deny that climate change is for real, however, they say humans are not to blame for it.
They do not like to be called deniers but want to be referred to as sceptics who question the science that relates carbon emissions with warming global temperatures.
Australia's chief scientist Penny Sackett is among the nine out of 10 scientists in the world who accept that anthropogenic climate change is real.
The most vocal critics of the scientific consensus on climate change are conservative MPs, or academics who are not climate science researchers.
The sceptics compare themselves to heretics who were in an earlier age burned at the stake for questioning the church.