When it comes to a summer walk, stinging nettles can be a bit of a hazard. Almost all of us have vivid memories of being stung by stinging nettles as a child. And many of us will recall a parent of grandparent reaching for a dock leaf and rubbing it on the stinging area, helping us to feel better and get back on our way. But have you ever wondered why it is that nettle sting in the first place? …
