Sir David is joined by a man who has been described as one of the gurus of modern physics, hes the physicist, television presenter and internationally bestselling author, Professor Michio Kaku.
In his latest book, Physics of the Impossible, he reveals how things that weve always believed to be impossible like time travel, invisibility and extra-terrestrial life may actually lie within the known laws of physics.
With the worlds attention fixed on the unfolding credit crisis, youd be forgiven for thinking that many governments dont have the luxury to focus on Human Rights. But that would be a mistake according to Amnesty International, who annual report was published this week. The two are entwined, they argue. What they call a Human Rights Time Bomb underlies this whole economic crisis. Well to explain what they mean by that Sir David is joined by the General Secretary of Amnesty International, Irene Khan.