Ian Fairchild was originally a geologist, then more specifically a sedimentologist, morphing into a physical geographer with leanings to environmental chemistry, before putting more geology back in the mix.  Hence, he is now Professor of Geosystems at the University of Birmingham, UK, researching both on modern environments and interpreting those in deep time, with carbonates, waters and climates as linking themes. 

Andy Baker was trained as a physical geographer, and worked at the interface of geology, physical geography, and environmental engineering.   He is currently a Professor at the University of New South Wales and a chief investigator in Australia’s National Centre for Groundwater Research and Training.