Yvonne and Alice talk about how two of the world's richest men, Bill Gates and Warren Buffett, met with billionaires in India to discuss philanthropy.

Alice and Stephen talk about the Scottish inventor James Watt, who was an important figure in the Industrial Revolution.

Alice and Stephen talk about satellite navigation systems, or sat navs, the gadgets which people use to help with directions when they are driving.

Alice and Stephen talk about football rivalries and hear how fans can be passionate, but sometimes get very angry when watching a football match.

In this programme, Stephen and Rob talk about citizen journalism, where people who aren't trained journalists report or blog their experiences.

In this programme, Alice and Finn talk about an amazing scientific achievement which has changed lives - a completely artificial heart.

In this programme Alice and Stephen talk about sleep walking. Scientists in America have discovered that if you walk in your sleep, it could be...

Yvonne and Rob talk about love letters and a new exhibition in London all about soldiers and their sweethearts.

As people celebrate the Chinese New Year, Yvonne and Finn talk about a traditional Chinese dish which is controversial with some.

In this programme, Alice and Finn talk about scam mail and we hear about an investigation into the problem by the Metropolitan Police in London.