In part 2, we take a look at Odysseus, whom Homer made famous in "The Odyssey," including his adventures in light of astronomical and geographical evidence which bases the story on accurate real events.

The fifth episode explores how the deportation of Hungary's Jews in 1944 precipitated the most intensive slaughter in Auschwitz's history.

In the fourth episode, Professor Marcus du Sautoy concludes his investigation into the history of mathematics with a look at some of the great unsolved problems that confronted mathematicians in the 20th century. After exploring Georg Cantor's work on infinity and Henri Poincare's work on chaos theory, he sees how mathematics was itself thrown into chaos by the discoveries of Kurt Godel and Paul Cohen, before completing his journey by considering some unsolved problems of maths today, including the Riemann Hypothesis.

Dial in to the fascinating history of the smartphone, from its roots in Morse Code to the latest models. Discover how the next generation of Smartphones will allow us to communicate through them just by thinking.
For most of history, we were isolated from the rest of humankind, but the urge to communicate with one another was so powerful that it changed how we interact and gave us a new interface with the world. The story of how we got here is full of the most astonishing twists and unlikely turns to create a device that put the whole world in our hands, the smartphone.

The documentary is to tell the dramatic story of the greatest natural disaster to shake the ancient world, a disaster that triggered the downfall of a civilisation and spawned a legend. Around 1620 BC a gigantic volcano in the Aegean Sea stirred from its 19,000-year slumber. The eruption tore the island of Thera apart, producing massive tsunamis that flooded the nearby island of Crete, the centre of Europe's first great civilisation – the Minoans. This apocalyptic event, many experts now believe, provided the inspiration for the legend of Atlantis. Based on the work of leading scientists, archaeologists and historians, this drama immerses viewers in the exotic world of the Minoans.

Syria Civil Defense (SCD), also known as the White Helmets, is a volunteer civil defense organization that operates in rebel-controlled Syria during the Syrian Civil War as a response to indiscriminate bombardment of civilian communities. This group of indomitable first responders risk their lives to rescue victims from the rubble.