The Columbian Exchange with Lauraine Jacobs

Simon Morris presents a new show about food - what we eat, why we eat it, where it came from and when we started trying it. Today, everyone knows about the many foods discovered in the Americas - from tomatoes and chillies to peanuts. But just as many had to be imported from the old world - wine, wheat, coffee and pork. Lauraine Jacobs explains "The Columbian Exchange".