This episode explores the nature of the greenhouse effect (discovered by Joseph Fourier and Svante Arrhenius), and the evidence demonstrating the existence of global warming from humanity's influence. Tyson begins by describing the long-term history of the planet Venus; based on readings from the Venera series of probes to the planet, the planet had once had an ocean and an atmosphere, but due to the release of carbon dioxide from volcanic eruptions, the runaway greenhouse effect on Venus caused the surface temperatures to increase and boiled away the oceans. Tyson then notes the delicate nature of the amount of carbon dioxide in the atmosphere can influence Earth's climate due to the greenhouse effect, and that levels of carbon dioxide have been increasing since the start of the 20th century. Evidence has shown this to be from mankind's consumption of oil, coal, and gas instead of from volcanic eruptions due to the isotopic signature of the carbon dioxide. The increase in carbon dioxide has led to an increase in temperatures, in turn leading to positive feedback loops of the melting polar ice caps and dethawing of the permafrost to increase carbon dioxide levels. Tyson then notes that humans have discovered means of harvesting solar power, such as Augustin Mouchot's solar-driven motor in the 19th century, and Frank Shuman's solar-based steam generator in the 1910's. Tyson points out that in both cases, the economics and ease of using cheap coal and oil caused these inventions to be overlooked at the time. Today, solar and wind-power systems would be able to collect enough solar energy from the sun easily. Tyson then compares the motivation for switching to these cleaner forms of energy to the efforts of the Space race and emphasizes that it is not too late for humanity to correct its course.

Narrated by David Attenborough, never-before-seen footage shows how our living in lockdown opened the door for nature to bounce back and thrive. Across the seas, skies, and lands, Earth found its rhythm when we came to a stop. The film is a fresh new approach to the global lockdown and the uplifting stories that have come out of it. People all over the world have had the chance to engage with nature like never before.

Peter Jackson's poignant WWI documentary 'They Shall Not Grow Old' to commemorate the centennial of the end of the first World War. The acclaimed documentary is an extraordinary look at the soldiers and events of the Great War, using film footage captured at the time, now presented as the world has never seen. By utilizing state-of-the-art restoration, colorization and 3D technologies, and pulling from 600 hours of BBC archival interviews, Jackson puts forth an intensely gripping, immersive and authentic experience through the eyes and voices of the British soldiers who lived it. Jackson recorded a special introduction to the film offering his perspective on why the film is important for audiences, who have never experienced WWI footage as anything but grainy black & white, and silent. Jackson opens a window to the past in a way that has never been seen or heard before, noting, 'Restoration is a humanizing process.'

New York, 1980: three complete strangers accidentally discover that they are identical triplets, separated at birth. The 19-year-olds' joyous reunion catapults them to international fame, but it also unlocks an extraordinary and disturbing secret that goes beyond their own lives - and could transform our understanding of human nature forever.

This documentary, directed by Nelson George, offers an unprecedented look into the making of Michael Jackson's iconic ‘Thriller,’ the best-selling album of all time. Celebrating its 40th anniversary, the film delves deep into the creative process behind this pop masterpiece. It features exclusive, never-before-seen footage and candid interviews, providing fans with a unique glimpse into the production of this record-breaking album.

April 1453. Sultan Mehmed II unleashes an artillery attack on Constantinople unlike any the world has ever known. It's the largest concentration of cannons that the world had seen in one place. The monumental task of keeping the Ottomans out of Constantinople falls on the shoulders of Genoese soldier of fortune Giovanni Giustiniani. He and his men must defend 14 miles of city walls. Mehmed launches his ambitious plans to break through the walls of Constantinople, but Giustiniani's mercenaries manage to forestall the attacks.