The other day I was ichatting with my Spanish friend Luisa. I mentioned that I was feeling very tired, had a little cough, and was worried that I was going to get ill. Luisa, who is a few years my elder and a mother, immediately began to prescribe home remedies to cure me from the sickness I didn't know I had. She recommended that I slice a large yellow onion in half and place it directly next to my bed ...