Perth’s Jo Nova is a key figure in Australia’s denial movement, and one of the few to have a science background. That her degree in limited to an undergraduate degree in microbiology does not seem to stop her holding herself as a climate change “expert”.
DeSmogBlog provides a good overview of her career to date:
Joanne Nova holds a Bachelor of Science degree in microbiology from the University of Western Australia. She also has a Graduate Certificate in Science Communications from the Australian National University. After graduation, Nova joined the Shell Questacon Science Circus, a Shell-sponsored program that employs university students to travel around Australia teaching interactive science programs to children. Currently, Nova works as a professional speaker, the Director of Science Speak, and the writer and creator of the blog, JoNova.
In short, Nova worked for an oil company in a “science circus”. Yes, I saw the obvious pun there as well… basically, its the Wiggles meets science. 
Nova has no experience outside her undergraduate degree and has published nothing via the peer review system. And yet this former science “entertainer” believes she can take on the scientific community?
Thankfully, we now have plenty of evidence demonstrating her complete misunderstanding of climate science. Normally Jo does not like to tackle “da science” so openly, as it obviously exposes her deep misunderstandings. However we now have some wonderful evidence of what she constitutes her “arguments” against the science.
And yes, they contain the expected howlers.
At this very moment she is engaged in a debate with Dr. Andrew Glikson of Australian National University (ANU) being facilitated by the rather right-wing magazine Quadrant. That Quadrant would adopt the knee-jerk “scepticism” is no surprise. However, the debate is fascinating as we finally have some very good evidence at what constitutes Nova’s argument against climate science.