For a short time, I forgot who I was. What happened?

Why does La Nina cause more rainfall in South Africa? How can we keep our skin moist without buying products? Is it possible to be averse to iron in your diet? What causes hot flushes during the menopause? What could cause a potential iron taste in my mouth? Like this podcast? Please help us by supporting the Naked Scientists (thenakedscientists.com/donate)