SBS has a report on peak metals (a subject that I don't find particularly worrisome) and peak oil - Peak Metals - What happens when we run out?.
In the 1950's, an American geoscientist came up with the term 'peak oil', to describe the moment when the maximum rate of petrol extraction from the earth would be hit - and academics in Australia are starting to talk about the very same problems faced by our metal mining industry.
Marion King Hubbert claimed that oil production in US mainland states would peak between 1965 and 1970. In the end, production in most US states is widely agreed to have peaked in 1971.
But in his native Texas, the year was 1972. And half a world away that same year, the young Club of Rome think tank was gathering attention with The Limits to Growth, a book causing a stir by confronting the issue of finite resources.
The Club of Rome is widely held as one of the kick-starters in the debate over minerals sustainability.
And while many metals can be recycled, whereas oil cannot, scientists are using the concept to deliver an understanding of the impacts of mining to the wider public.
Put simply, the extraction of virgin ores from the earth's crust will peak - indeed, it already has for many.
Although the theory is not without its detractors, there is no doubt that the metals that drive our society are finite resources - and extracting them from the earth has to end.
The question is what countries like Australia, who have a gross domestic product so linked to mining, will do in such a scenario.
'Peak oil' theory itself, in operation, will directly influence the mining and minerals industry through rising fuel costs, each increase edging away at the sustainability of the process.