This series takes viewers on a journey to the frontiers of science, where researchers are tackling some of the biggest questions about life and the cosmos. The universe is hiding something. In fact, it is hiding a lot. Everything we experience on Earth, the stars and galaxies we see in the cosmos—all the 'normal' matter and energy that we understand—make up only 5% of the known universe. The other 95% is made up of two mysterious components: 'dark matter' and 'dark energy.' We can’t see them, but we know they’re there. And what’s more —these two shadowy ingredients are locked in an epic battle to control the very fate of the universe.
Now, scientists are trying to shed light on the so-called 'dark sector' as the latest generation of detectors rev up, and powerful telescopes peer deeper into space than ever before to observe how it behaves. Will the discoveries help reveal how galaxies formed? In the series finale, Nova Wonders journeys to the stars and back to investigate what we know —and don’t know. Find out how scientists are discovering new secrets about the history of the universe, and why they’re predicting a shocking future.

With the killer's identity - and twisted motives - revealed, the group finds more key clues as the global police manhunt reaches a fever pitch. A question arises: Were we complicit in his crimes? Did we feed the narcissism of the monster to the point where he had to go forward?

Construction of the famous Basilica in Barcelona, designed by Antoni Gaudi, was started in 1882. To this day, it has not been completed. The architecture is one of such creative madness, originality, and fantasy, that it has been declared a World Heritage Site by UNESCO. After years of piecing back together Gaudi’s master plan with advancements in computer technology and design, architects have been able to pursue the building, started 140 years ago. However, as construction progresses, some of its greatest challenges have yet to be surmounted, including the construction of 10 more spires. The team hopes to complete the masterpiece by 2026, Gaudi’s 100 year anniversary.
This film documents the complexities of respecting the original inspiration and techniques set forth by Gaudi over a century ago. Juxtaposing sequences shot in the midst of the cathedral as construction ensues, with reenactments and CGI images, the documentary draws you into Gaudi’s paradise on earth, from the origins of its inspiration to the most recent architectural additions.

Andrew Marr tells the story of the first empires which laid the foundations for the modern world. From the Assyrians to Alexander the Great, conquerors rampaged across the Middle East and vicious wars were fought all the way from China to the Mediterranean. But this time of chaos and destruction also brought enormous progress and inspired human development. In the Middle East, the Phoenicians invented the alphabet, and one of the most powerful ideas in world history emerged: the belief in just one God. In India, the Buddha offered a radical alternative to empire building - a way of living that had no place for violence or hierarchy and was open to everyone. Great thinkers from Socrates to Confucius proposed new ideas about how to rule more wisely and live in a better society. And in Greece, democracy was born - the greatest political experiment of all. But within just a few years, its future would be under threat from invasion by an empire in the east...

We move around in space, but we are stuck in a prison of time moving ever forwards. Einstein said, 'The distinction between past, present and future is only a stubbornly persistent illusion.' Is our experience of the ticking clock merely a trick of the mind? Could science ever make the clock move backwards? Experiments in quantum physics are showing that the future influences the present: what happens later limits the choices we think we have now. The laws of physics say visiting or talking to ourselves in the past is possible – but changing history once we get there is not.

Caesar contemplates Pompey's counteroffer but Mark Anthony wishes the war. Vorenus continues to struggle as a businessman and must reevaluate his career choice. Atia schemes to come between Caesar and Servilia and Pullo seeks Octavian's help.