Dr. 'Bakr Bahaj, University of Southampton, on 23 April 2004
Dr. Bahaj is the head of the Sustainable Energy Research Group in the School of Civil Engineering and the Environment at the University of Southampton.
Everything we do uses energy. There are two basically different ways of obtaining this energy. Either it is by using up fossil fuels, oil, gas, coal etc. Or it can be generated sustainably by using a repetitive energy flow, like recycling organic materials, intercepting winds or tides, etc.