Global food prices
The Thai Prime Minister, Abhisit Vejjajiva tells Lesley Curwen how governments can tackle rising food prices. He suggests they should target the neediest groups for assistance.
Plus, Johann Tergesen, President of research company, Burcon Nutrascience describes new plant proteins which could help people to have healthier diets with less meat-based protein.
And our technology commentator Jeremy Wagstaff asks whether social networks can actually cause revolutions.