A very interesting, if short, book for a person who is interested in recycling, growing your own veg, eutrophication, science etc. At first it really does sound like a mad idea, but what did we all do before the invention of the loo? I like the "urine stories" which are nice if you happen to be a biology teacher and want to spice up your kidney or nitrogen cycle lessons. also the experiments of growing crops with and without urine are proof it works. To sum up, it was quite afun read and it gives some food for thought, and some huge onions this year so far!!!