The fourth part of the series focuses on the exciting and dramatic Formula 1 race in which Rubens Barrichello and Jenson Button, drivers of the Brawn GP team, fought for the championship. Rubens Barrichello leads the race. However, tension rises when Jenson Button, his teammate and main rival for the title, begins to gain ground. The narration intensifies with the description of technical problems and crucial strategic decisions. As the race unfolds, the internal dynamics of the Brawn GP team are explored, as well as the rivalry between the drivers and the pressure to win the championship. The narrative reaches its climax in the thrilling final laps, where victory and defeat are decided by small margins.
The episode concludes with the celebration of victory and reflection on the significance of this race for the drivers, the team, and their place in the history of Formula 1. The documentary is a mix of on-track action, human and technical drama, and a deep exploration of what it takes to win at the highest level of motorsport.

The written word is so important in everyday life that there can be few more radical acts than forcing an entire nation to learn a new script. Yet that is what happened in Turkey in 1928 when Mustafa Kemal decreed that the Arabic script would be replaced by the letters of the Latin alphabet. Communication with computers using human language is usually made with Latin letters. This is how most Chinese people interact with their computers and smart phones, using a Latin-based phonetic script called Pinyin. As a result, even highly educated Chinese are losing the ability to write using Chinese characters. Could what is happening in China be the future of writing everywhere?

Carl Sagan opens the program with a description of the cosmos and the Spaceship of the Imagination. The ship journeys through the universe's hundred billion galaxies, the Local Group, the Andromeda Galaxy, the Milky Way, the Orion Nebula, our Solar System, and finally the planet Earth. Eratosthenes' successful calculation of the circumference of Earth leads to a description of the ancient Library of Alexandria. Finally, the Ages of Science are described, before pulling back to the full span of the Cosmic Calendar.

The film is a descriptive time-lapse journey about the magical, mysterious and medicinal world of fungi and their power to heal, sustain an contribute to the regeneration of life on Earth that began 3.5 billion years ago.
Imagine an organism that feeds you, heals you, reveals secrets of the universe and could help save the planet. You'll see it through the eyes of mycologists, like renowned Paul Stamets, about the unlimited potential of fungi in the fields of food, medicine, expanding consciousness, bioremediation, neurogenesis and treating end-of-life anxiety.

The film examines the profound claim that most, if not all, of the degenerative diseases that afflict us can be controlled, or even reversed, by rejecting our present menu of animal-based and processed foods.
Despite the most advanced medical technology in the world, we are sicker than ever by nearly every measure. Cases of diabetes are exploding, especially amongst our younger population. About half of us are taking at least one prescription drug and major medical operations have become routine. Heart disease, cancer and stroke are the country's three leading causes of death, even though billions are spent each year to 'battle' these very conditions. Millions suffer from a host of other degenerative diseases. Could it be there's a single solution to all of these problems?

Director James Cameron returns to the site of the 1912 wreck of the RMS Titanic. With a team of history and marine experts he embarks on an unscripted adventure back to the final grave of 1,517 people. Using two small, purpose-built remotely operated vehicles, we can see inside the Titanic and with the help of CGI, view the ship's original appearance superimposed on the deep-dive images. Throughout the movie, there are re-enactments of events that are discussed that use CGI recreations of the interior of the Titanic. The documentary was named one of the Best 3D movies ever by Rolling Stone.