He holds a PhD in cognitive psychology at the University of Western Australia and a Bachelor of Science at the University of Queensland, achieving First Class Honours with a major in physics. He co-hosts the podcast Evidence Squared with Peter Jacobs. He co-authored the 2011 book Climate Change Denial: Heads in the Sand with Haydn Washington, and the 2013 college textbook Climate Change Science: A Modern Synthesis with Tom Farmer. He also lead-authored the paper Quantifying the Consensus on anthropogenic global warming in the scientific literature, which was tweeted by President Obama and was awarded the best paper published in Environmental Research Letters in 2013.