This Way Up for Saturday 25 October 2008
Inside Economics
The latest prison currency in US jails. Not cigarettes or books of stamps...mackerel fillets in a pouch!
Bits and Bytes
Smartphones are shaking up the mobile market, dirty tech tricks at election time, and the US military's mining networking sites.
Word of Mouth
The advertising agency that can call on an army of 400,000 people to promote people's products.
Hungry Cities
Carolyn Steel on how the challenges of producing and transporting food has shaped our urban areas.