The Re-Cycle

From Al Jazeera English

Phosphorus is one of those elements necessary to plant growth, but also seriously abused by modern farmers. Excessive fertilization contaminates runoff, causing algal blooms and killing off lakes and rivers (and, during the Eighties, lead to the deaths of beluga whales in the St. Lawrence river).
Technology, developed in Canada, looks to make us less reliant on mining phosphorus, instead allowing us to recycle it. Amandeep Bhangu, an Al Jazeera reporter in London, UK, visits Europe's first facility that is turning raw sewage into fertiliser.