France's cities produce millions of litres of urine every day. Most disappears into the sewer system. But some scientists are now saying what we flush away could help fertilise the country's fields – an eco-friendly way to reduce dependence on increasingly expensive and polluting imported fertilisers.
At a collection point in Châtillon, just south of Paris, Bruno Rakedjian unscrews the cap of a five-litre jerry can and inserts a plastic tube which then pumps the yellow liquid contents into a 150-litre container.