Carol Richards asked the Naked Scientists:
Good Morning to you, I heard your radio conversations on Talk Rado 702 in South Africa this morning, while I was in my car, & thought I would like to ask you a question, please.
Could you explain, if possible, why the sweat of a 44 year old man would stain the bed sheets a bright yellow? Would it be something he's taking, or something he might be smoking?
What do you think?