I did an honours thesis in 1995. It was a carbon life cycle assessment of paper products encompassing the whole chain from logging, through processing, marketing, consumption and disposal. There was expertise on the carbon impacts of logging in Forestry (obviously), on paper processing in Architecture and Planning, on marketing in Business, and on waste management in Engineering. So my research involved traipsing around university departments and libraries in a strange parallel of the lifecycle of the paper products I was assessing. And weren't people enthused to see someone saying hullo to their department from a different one. There wasn't much of that around! Great fun.