How many cows does it take to make a pint of milk? 8th August

08/08/2013 46 min
How many cows does it take to make a pint of milk? 8th August

Listen "How many cows does it take to make a pint of milk? 8th August"

Episode Synopsis

Questions on Mystery hour today included: what does a barbecue mean, how do we know the atomic clock is accurate and how do they work out the bills for the street lights?