Many of us have been intrigued by the possibility of alternative power sources to replace the dependence of petro-chemical sources due to their finite limits as opposed to the less finite and potentially more abundant sources from so-called renewables such as solar, wind, tidal and biomass. This past March in Warwick, UK there was a TEDx conference and one of the talks was delivered by Professor David MacKay, a physicist who thinks we should quit shouting at each other about the merits of one solution over another and step back a few minutes and look at the problem of replacing Petro-chemicals with renewables with some arithmetic.
He analyses the issue and creates a data set of consumption as watts/Square meter and then maps that against population density in different countries. A surprising result turns out to be that the UK could be a picture of what might happen to other countries in our world where the areas are small and population density continues to grow.
So, take about 15 minutes and watch the video and then we'll continue the discussion. TEDx link
