Dawkins opines that the moral framework of religions is warped, and argues against the religious indoctrination of children. He discusses specifically the idea of religion seen as a virus in the sense of a meme. He begins by explaining how a child is genetically programmed to believe without questioning the word of authority figures, especially parents – the evolutionary imperative being that no child would survive by adopting a sceptical attitude towards everything their elders said. But this same imperative, he claims, leaves children open to infection by religion.

Originally a Prisoner of War camp for Soviet soldiers, SS Commander Rudolf Hoss oversaw the transition of Auschwitz from a political camp to a place to murder thousands of people. In the Autumn of 1941,the Nazis were about to embark on the most crucial few months in the planning of what they called 'The Final Solution' - the extermination of the Jews.

Take a tour through the Art Gallery of the Galaxy and view what are considered the "crown jewels" of the heavens. Nebulas are mysterious clouds of gas that aren't classified as stars, planets, moons or asteroids. Astronomers use the most sophisticated techniques to view them since they are practically invisible to the naked eye. Nothing less than stunning, nebulas glow, reflect or obscure the galaxy's light with amazing swirls of color. Nebulas mark the regions where the nothingness of space first coalesces, where stars are born and where stars die. Cutting-edge computer graphics are used to bring the universe down to earth.

There is no greater test for life than winter, as temperatures plummet to 70 below and winds reach 200kph. Darkness and ice extend across the polar regions and only a few remarkable survivors gamble on remaining. We join a female polar bear trekking into the Arctic mountains to give birth as the first blizzards arrive. Out on the frozen ocean, the entire world's population of spectacled eider ducks brave the winter in a giant ice hole kept open by ferocious currents. Arctic forests transform into a wonderland of frost and snow - the scene of a desperate and bloody battle between wolf and bison, but also where a remarkable alliance between raven and wolverine is made. Beneath the snow lies a magical world of winter survivors. Here tiny voles dodge the clutches of the great grey owl, but cannot escape the ultimate under-show predator - the least weasel. Midwinter and a male polar bear wanders alone across the dark, empty icescape. Below the snow, polar bear cubs begin life in an icy den while fantastical auroras light the night skies above. In Antarctica, we join male emperor penguins in their darkest hour, battling to protect precious eggs from fierce polar storms. Weddell seals escape to a hidden world of jewel-coloured corals and alien-looking creatures but frozen devastation follows as sinister ice stalactites reach down with deadly effect.

With optional Hebrew subtitles. This episode explores how the spread of the Enlightenment brought ghetto walls around Europe crashing down and allowed Jews to join the wider fabric of modern life in Europe in unprecedented ways. This Jewish renaissance saw Giacomo Meyerbeer and Felix Mendelssohn to establish the enduring tradition for Jewish musical prodigies. However the integration of Jewish talent into the mainstream of European culture and commerce eventually stirred up ancient prejudice, expressed in the new fashion of Romantic nationalism and the pseudo-science of anti-semitism.

With optional Hebrew subtitles. Simon Schama's history of the Jewish experience plunges into the lost world of the shtetl, the Jewish towns and villages sewn across the hinterlands of Eastern Europe which became the seedbed of a uniquely Jewish culture. Shtetl culture would make its mark on the modern world, from the revolutionary politics of the Soviet Union to the mass culture of Tin Pan Alley and Hollywood. It was also the birthplaces of Hasidism, the most visible, iconic and, arguably, most misunderstood expression of Jewish faith and fervour. This chapter of the story travels from the forests of Lithuania, where Simon's own family logged wood and fought wolves, to the streets of the Lower East Side where the sons of shtetl immigrants wrote the American songbook. With grim inevitability, the story returns to Eastern Europe in 1940 - where the genocidal mechanisms of the 'final solution' were beginning to grind the shtetl world into dust and ash.