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Cities: how smart strategies can turn into effective action plans
Cities: how smart strategies can turn into effective action plans When Justin Bieber made his way to Stockholm in September 2016, city officials hardly expected the tween heartthrob to pave the way for sustainable urban policy .
Biogas from animal waste in need of maturity
Biogas from animal waste in need of maturity Livestock produces a lot of waste. One solution is to turn such agricultural waste into biogas to generate energy .  It requires using so-called anaerobic digestion, which consists in breaking down biodegradable material in the absence of oxygen.