Orbiting Earth at around 27.000 km/h, the International Space Station is one of humanity’s greatest engineering achievements, but also one of the most unforgiving places ever built. Astronauts and mission controllers recount moments when routine work suddenly became a fight for survival: a spacesuit filling with water, toxic ammonia spraying across a spacewalker, dangerous temperature extremes, radiation, fire, contamination and the constant threat of collision. The series reveals how every mission depends on training, improvisation and split-second decisions in an environment where even a small failure can become fatal. Across the two episodes, presented here together in a single uninterrupted video, the danger escalates from the hazardous construction and maintenance of the station to the growing risks of life aboard it. Astronauts face micrometeoroids and space debris travelling at lethal speeds, docking emergencies and system failures, culminating in the extraordinary 2021 incident when the newly arrived Nauka module unexpectedly fired its thrusters and sent the entire ISS rotating out of control. With communications at risk and the structure under immense strain, crews in orbit and controllers on Earth must work together to regain control. The result is a gripping story of courage, science and survival inside a machine that has kept humans continuously living in space for more than two decades.
This documentary series explores the Three Mile Island Accident that occurred in Pennsylvania on March 28, 1979, suffering a partial meltdown of the reactor core on the same day. It also reveals how this accident unfolded in real time, its impact on the community and the personal account of the chief engineer and whistleblower, Richard Parks, who had the courage to speak out and avert a catastrophe for the East Coast. This first episode explains how in 1979, a breakdown at the power plant causes confusion and the release of radiation. Fear spreads, as do suspicions that the authorities are hiding the truth.
Meet Perseverance, NASA's latest rover, as it heads to Mars to answer one question: did life exist on the red planet? On the way, it will lay the foundation for human exploration of our closest neighbour. Today, Mars is hostile to life. It's too cold for water to stay liquid on the surface, and the thin atmosphere lets through high levels of radiation, potentially sterilizing the upper part of the soil. But it wasn't always like this. Some 3.5 billion years ago or more, water was flowing on the surface. It carved channels still visible today and pooled in impact craters. A thicker carbon dioxide atmosphere would have blocked more of the harmful radiation. The Mars 2020/Perseverance rover is designed to better understand the geology of Mars and seek signs of ancient life. The mission will collect and store a set of rock and soil samples that could be returned to Earth in the future. It will also test new technology to benefit future robotic and human exploration of Mars, as the Ingenuity Helicopter.
Could the chemicals found in marijuana prevent and even heal several deadly cancers? Could the tumour regulating properties of cannabinoids someday replace the debilitating drugs, chemotherapy, and radiation that harms as often as it heals? Discover the truth about this ancient medicine as world renowned scientists in the field of cannabinoid research explain and illustrate their truly mind-blowing discoveries. A powerful and eye-opening film about the future of cannabis and perhaps even the future of medicine.
Professor Jim Al-Khalili sets out to discover whether nuclear power is safe. He begins in Japan, at the former Fukushima nuclear plant, where he meets some of the tens of thousands of people who have been evacuated from the exclusion zone. He travels to an abandoned village just outside the zone to witness a nuclear clean-up operation. Jim draws on the latest scientific findings from Japan and from the previous explosion at Chernobyl to understand how dangerous the release of radiation is likely to be and what that means for our trust in nuclear power.
A variety of cosmic events have both helpful and harmful effects on life on Earth. From the beauty of the Aurora Borealis and rainbows to the dangers of UV radiation and cosmic rays, from the miracle of photosynthesis to the thrill of a meteor shower, this episode explores how the effects generated by the sun and other extra-solar sources can literally get under our skin, scramble our technology, make life possible and threaten our existence all at the same time
Across the two episodes, presented here together in a single uninterrupted video, the danger escalates from the hazardous construction and maintenance of the station to the growing risks of life aboard it. Astronauts face micrometeoroids and space debris travelling at lethal speeds, docking emergencies and system failures, culminating in the extraordinary 2021 incident when the newly arrived Nauka module unexpectedly fired its thrusters and sent the entire ISS rotating out of control. With communications at risk and the structure under immense strain, crews in orbit and controllers on Earth must work together to regain control. The result is a gripping story of courage, science and survival inside a machine that has kept humans continuously living in space for more than two decades.