New York City has its own Silicon Alley and Manhattan is fast becoming a hub for high tech start ups. Peter Day talks to the entrepreneurs trying to make it in the Big Apple by taking advantage of the brain power no longer locked up in banks and the advances faster and smarter computers can offer.

One of the most famous computer systems in the world is called Watson, developed by IBM. It's best known in for beating two human contestants to win the American game show, Jeopardy. Watson may now be leading a revolution in 'machine learning'.

Immigration is one of the key issues of the General Election campaign. Peter Day asks businesses, big and small, what they think about immigration. How dependent is Britain on workers from other countries in Europe, and beyond? What impact have tighter visa restrictions for migrants from outside Europe had on British business?

As Dame Ellen MacArthur circumnavigated the globe she got first-hand knowledge of the finite nature of the world's resources. When she retired from sailing she created a foundation to promote the concept of a 'Circular Economy' - where resources are re-used and waste reduced to zero. Many companies around the world - including some of the biggest, like Unilever - are responding to her ideas.

Businesses in Argentina say they suffer from too much red tape, rampant inflation and import restrictions. Middle class Buenos Aires residents say the cost of everyday goods in supermarkets makes life difficult. Peter Day hears from business leaders with innovative solutions and a former government minister tells him how he is saddened by the country’s current economic plight.

The Information Technology department used to be a mysterious backroom operation, but has become the vital component of a successful company. With relentless technical developments businesses are facing a constant risk of their computer systems being past their sell by date.

Business commentator and social philosopher Charles Handy speaks to Peter Day about his new book, The Second Curve, and asks if we should all plan on reinventing ourselves in later life to take advantage of new trends, innovations and ideas that will affect the future world of work

The growing freelance and micro-business economy is explored by Peter Day. Why are so many people setting up on their own and will it be a decision they'll come to regret?

Innovation is hard work, says the British-born author and entrepreneur Kevin Ashton. He was a pioneer of what is now called the Internet of Things, adding communications ability to millions of objects through his insightful work with sensors.

Peter Day talks to Gary Hamel, one of the best known management gurus in the world.