This Way Up for Saturday 9 July 2011
For the past 8 years, London's been waging war on the masses of pigeons that congregate around Trafalgar Square. The solution's not been a high tech one either as the city's gone all medieval on these winged critters! With London correspondent Chris Parkin.
Connor Diemand-Yauman is the lead author of a study showing that making something harder to read helps you remember more information.
Many food labels show the presence of soy in our food, often in unexpected places. So is there actually more soy in our food system or is something else going on? With food technologist Torben Sorensen.
'Fifty Plants that Changed the Course of History' is a new book by author Bill Laws. This week, he singles out wheat from his list.
BBC technology correspondent Rory Cellan-Jones traces the story of social networking from the early days of computing and the 60s counterculture, through to today's mega-corporations worth billions of dollars.
We're back in the supermarket looking at more food additives with Matt Golding. This week, artificial sweeteners- things like saccharin and sucralose that are 200 or 300 times sweeter than sugar but with way fewer calories.