URINE AND OUT Does cranberry juice cure cystitis? If it does, how does it work - surely urine is just urine by the time it is excreted from the body? If it doesn't, how did the myth arise? Pauline Greenshiels Liverpool, UK TREES OF GREEN On my teacher training course we are handed stacks and stacks of papers. However, I am aware of the need for environmental sustainability. So I would like to know how many A4 sheets are in an average tree used for paper making.
展开▼
