Last Watched

Finding Life on Mars

   2020    Science
For decades, scientists have dreamed of finding life on Mars. But despite their best efforts, no signs of life have been found. Could that be about to change? This is the story of the scientists and engineers behind Perseverance: the rover that could change our view of Mars forever.
Series: Secrets of the Universe

Gender Swap

   2020    Nature
One extraordinary family of fish has achieved the ultimate form of gender equality. When it comes to breeding, seahorses do it like no other animal on the planet. Their fierce females refuse to be left holding the baby. So it's the males that carry their brood. In this episode we explore the world of mating seahorses which are the only animals in the world that have a major gender role reversal.
Series: Fierce Queens

Delay

   2022    Culture
The last chapter explains how the 2010s became another lost decade in the fight against climate change – as the move to natural gas delayed a transition to more renewable sources of energy.
Engineer Tony Ingraffea, in the 1980s, helped develop a new technique for extracting gas and oil from shale rock, which ultimately became known as 'Fracking'. It was to unleash vast new reserves of fossil fuels and was promoted as a cleaner energy source. But Ingraffea explains how he later came to regret his work when he realized that gas could be even worse for climate change than coal and oil.
Dar-Lon Chang, a former ExxonMobil engineer, speaks for the first time on camera alleging that as the company increased its natural gas operations, it was not sufficiently monitoring methane leaks that were contributing to climate change. Now, after a year of unprecedented wildfires, drought and other climate-related disasters, multiple lawsuits are being brought in US courts in efforts to hold Big Oil legally accountable for the climate crisis.
Series: Big Oil vs The World

Fallout

   2022    Technology
In the last episode, despite disturbing revelations of wrongdoing at Three Mile Island before and after the accident, the utility fights to bring the plant back online. Its Unit 1 had its license temporarily suspended following the incident at Unit 2. Although the citizens of the three counties surrounding the site voted by an overwhelming margin to retire Unit 1 permanently in a non-binding resolution in 1982, it was permitted to resume operations in 1985 following a 4–1 vote by the Nuclear Regulatory Commission.
In 2017, it was announced that operations would cease by 2019 due to financial pressure from cheap natural gas, unless lawmakers stepped in to keep it open. Unit 1 shut down on September 20, 2019.
Billed as the worst nuclear incident in U.S. history, what’s particularly scary here is how close Three Mile Island incident came to becoming a national disaster. Without giving away the whole story, cost-cutting 'solutions' almost cause a catastrophic disaster.
Series: Meltdown: Three Mile Island

Countdown to Catastrophe

   2023    Science
November 4, 2029. We face a countdown to catastrophe. A giant asteroid hurtles towards Earth at 40,000 mph. It's heading straight for the eastern seaboard of the United States. The space rock could wipe out an entire city and cause widespread devastation. Can Earth survive? Now, experts confront the story of this fictional asteroid event to determine what could happen, and how it might be stopped.
Series: How the Universe Works Season 11
The Sky at Night

The Sky at Night

2025  Science
Mammals

Mammals

2024  Nature
Sonic Highways

Sonic Highways

2014  Art
Absolute Zero

Absolute Zero

2007  Technology
The Making of the Mob

The Making of the Mob

2016  History
Ancient Rome

Ancient Rome

2006  History
Cosmos

Cosmos

1980  Culture
Kingdom

Kingdom

2025  Nature