Time is woven into the fabric of the universe as one of the dimensions in which we live our daily lives. But maybe it is only a brain state that we use to piece together events. Could it exist only in our minds? Your sense of time can be totally different than the person next to you. This and other theories illustrate that time is an illusion and does not really exist. The world's top physicists tackle this fundamental question, does time exist, and offer new ways to perceive the physical world.

The second episode of the series looks at dreams and tries to explain what happens in the brain and body after we go to sleep. It looks at the significance of dreams and what dreams can teach us about ourselves. It talks to neuroscientists who discuss slow-wave sleep and REM (rapid eye movement) sleep during which dreams occur. It looks at the history of dream interpretation and its validity.

Everyone always wants to be able to choose - but who really makes these choices? And do we really want to have more choices? Michael Stevens finds out as he explores decision-making.

The film unveils the profound impact of our gut on overall health, an area often overlooked despite its significance. Delving into the complexities of the gut microbiome, this documentary reveals how this ‘second brain’ influences everything from weight management and disease prevention to mental health. By exploring personal stories and scientific research, the film illustrates the dynamic relationship between what we eat and how we feel, urging viewers to reconsider their diets and understand the powerful connection between gut health and wellness.
As the documentary progresses, viewers are introduced to cutting-edge research and therapies that are reshaping our understanding of health. Through expert interviews and captivating case studies, ‘Hack Your Health: The Secrets of Your Gut’ not only informs but also inspires a reevaluation of lifestyle choices. This eye-opening journey through the intricate world of gut health highlights the potential for radical improvements in public health, making it a must-watch for anyone interested in the latest advancements in science and wellness.

Jacob Ward travels the globe to investigate Decision Science. We imagine our conscious minds make most decisions but in reality we go through much of our lives on 'Autopilot'. And marketers and social media companies rely on it.
The first part offers you the owner’s manual for this autopilot. The second part, 'Weapons of Influence', explores how politicians, social media companies and corporate marketers use big data to hack decision-making system. The third part, 'Us vs. Them', shows how this autopilot biases fuel the nation's divisions and how to overcome them. The last part, 'The Wings of Angels', explores why hacking for good is an important scientific discovery; how people can hack their own minds to improve their lives and change the world for the better.

Dr Aleks Krotoski concludes her investigation of how the World Wide Web is transforming almost every aspect of our lives. Joined by Facebook founder Mark Zuckerberg, Bill Gates, Al Gore and the neuroscientist Susan Greenfield, Aleks examines the popularity of social networks such as Facebook and asks how they are changing our relationships. And, in a ground-breaking test at University College London, Aleks investigates how the Web may be distracting and overloading our brains.