What is it that stops South Africa delivering a better standard of living to its people?
Can a mix of entrepreneurship and technology lift young people out of joblessness?
How long will taxpayers have to pay out billions to subsidise wind or solar power?
What will US voters look for on the economy? Plus, is an era of zero growth on the way?
Has Europe's financial crisis undermined the legitimacy of democratic politics?
Divided lives: do we display different moral behaviour at work and at home?
Is there too much hype about smartphones and connectivity?
As the ECB acts to save the euro, are central banks are over-reaching themselves?
Lesley Curwen and Justin Rowlatt get behind the headlines to find out what's really goi...
Are biofuels responsible for rising food prices?