Down the Deep Dark Web • 2016

74:14

The inside story of the tech entrepreneurs who created the social media app Twitter. At first the site grew on the back of celebrities who realised it offered them a direct way to communicate with fans. After going global, it seemed to be fulfilling the founders' dream of a digital utopia where all voices would be heard. But as hate speech and misinformation flooded the platform, the founders faced growing problems to control it - and the sale to Elon Musk in 2022 represented the end of their dream.

2025 • Technology

53:57

Each day, some 2.5 trillion bytes of data are exchanged, a deluge known as "big data." How can we classify, store, and give meaning to this mass of digital information? Will our digital society remain capable of producing a lasting memory? Learn the fate of memory storage in the future.

2014 • Technology

59:02

Safety and security are two of the biggest challenges faced by each and every metropolis. Whether earthquake, terrorism, flood or just crime, it's the geology, politics and social makeup of the megacities that make them some of the most profitable and dangerous places to live. Andrew starts in Mexico City, the kidnap capital of the world. The compactness of the megacity often means that the super rich must live closely beside the super poor. Andrew finds out how evasive driving and bulletproof vests are protecting Mexico's super rich and middle classes. In London, he joins a Metropolitan Police riot unit on a practice routine, and hangs out with boy racers in Tokyo. And he meets the canine helpers responsible for saving lives in the event of terrorist attack. Tokyo, Mexico City, Dhaka - the megacities are victims of their shifting geologies. Andrew explores how sea levels, earthquakes and floods are putting some of our most promising cities at risk.

S1E2 • Andrew Marr's Megacities • 2011 • Technology

56:12

First-hand accounts of those who made possible mankind's greatest achievement.

S1E3 • Blue Sky Metropolis • 2020 • Technology

54:03

With specialized photography we can view some amazing sights not visible to the human eye. Watch the "Kiss Experiment", the dynamics of the oldest weapon ever discovered, the brain waves of musicians and the scales on a butterfly's wing, amongst other awesome moments captured for our eyes to see.

S1E2 • Invisible Universe • 2016 • Technology

82:07

The documentary about the founders of the Pirate Bay.

Technology