The issue of circular economy is back on the agenda in Brussels this week, but one of the model's core ideas - that one industry's waste is another's valuable resource - has existed for over forty years.
A good deal of the world's diabetes medication comes from Novo Nordisk's pharmaceutical factory in Kalundborg, an industrial area 100 kilometres west of Copenhagen, Denmark.
Electricity from DONG's coal-fired power plant in the same area lights large parts of Region Zealand. The h...
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