Steve Fielding writes in The Australian
Until recently I, like most Australians, simply accepted without question the notion that global warming was a result of increased carbon emissions. However, after speaking to a cross-section of noted scientists, including Ian Plimer, a professor at the University of Adelaide and author of Heaven and Earth, I quickly began to understand that the science on this issue was by no means conclusive. At the conference I attended on Tuesday hosted by the Heartland Institute, I heard views that challenged the Rudd government's set of "facts". Views that could not be dismissed as mere conspiracy theories, but that were derived using proper scientific analysis. The idea that climate change is a result of the variation in solar activity and not related to the increase of CO2 into the atmosphere is not something I can remember ever being discussed in the media. The question of whether global warming is a new phenomenon or something that is just part of the naturally occurring 1500-year climate cycle was never raised in any of the discussions I have had with the Rudd government. Has the government considered these questions, or has it just accepted the one scientific explanation for climate change at face value?
These are the sorts of questions that I believe need to be answered before any emissions trading scheme can be properly considered.
Read it here.