Name: Peecycling. Age: As a term, dates to about 2006; as a practice, centuries old. Appearance: All yellow. If this is about peeing while riding a bicycle, I’ve tried it and it doesn’t work. This is about saving and storing your urine. Why would I want to do that? So the CIA can’t get it? So that it can be recycled. Recycled as what? Fertiliser. Human urine is a rich source of nitrogen, phosphorus and potassium. According to the Rich Earth Institute of Vermont, the urine one adult produces in a year – 125 US gallons (473 litres) – is...