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Gigantic machine combs beach in southern California and retrieves articles lost in sand; synthetic gems made by new chemical process; aviation school holds classes in grounded transport plane; how seaweed is processed for scientific use.

A vivid journey into the mysterious subterranean world of mycelium and its fruit— the mushroom. A story that begins 3.5 billion years ago, fungi makes the soil that supports life, connecting vast systems of roots from plants and trees all over the planet, like an underground Internet. Through the eyes of renowned mycologist Paul Stamets, professor of forest ecology Suzanne Simard, best selling author Michael Pollan, food naturalist Eugenia Bone and others, we experience the power, beauty and complexity of the fungi kingdom.

Enter the captivating world of scientific exploration through the lens of Kiana Frank who is a proud Native Hawaiian and microbiologist. Her unique journey intertwines traditional wisdom with the latest molecular techniques, casting light on the intricate interactions between microorganisms and the environment they inhabit. It is within the ancient oral narrative of Meheanu, a revered goddess, that Kiana finds a clue about nitrogen cycling in fish ponds—a pivotal ecological process orchestrating the relationship between microorganisms, plants, and fish.

In today's climate debate, there is only one factor that cannot be calculated in climate models - humans. How can we nevertheless understand our role in the climate system and manage the crisis? Climate change is a complex global problem. Increasingly extreme weather events, rising sea levels, and more difficult living conditions - including for us humans - are already the order of the day. Global society has never faced such a complex challenge. For young people in particular, the frightening climate scenarios will be a reality in the future. For the global south, it is already today. To overcome this crisis, different perspectives are needed. "THE UNPREDICTABLE FACTOR" goes back to the origins of the German environmental movement, accompanies today's activists in the Rhineland in their fight against the coal industry and gives a voice to scientists from climate research, ethnology and psychology.

In this two-part Channel 4 series, Professor Richard Dawkins challenges what he describes as 'a process of non-thinking called faith'. He describes his astonishment that, at the start of the 21st century, religious faith is gaining ground in the face of rational, scientific truth. Science, based on scepticism, investigation and evidence, must continuously test its own concepts and claims. Faith, by definition, defies evidence: it is untested and unshakeable, and is therefore in direct contradiction with science. In addition, though religions preach morality, peace and hope, in fact, says Dawkins, they bring intolerance, violence and destruction. The growth of extreme fundamentalism in so many religions across the world not only endangers humanity but, he argues, is in conflict with the trend over thousands of years of history for humanity to progress to become more enlightened and more tolerant.

From the Los Angeles Times and Pulitzer Prize-finalist Rosanna Xia, OUT OF PLAIN SIGHT is a cinematic exposé of an environmental disaster lurking just off the coast of Southern California. Not far from Catalina Island, aboard one of the most-advanced research ships in the world, David Valentine discovered a corroded barrel on the seafloor that gave him chills. The full environmental horror sharpens into greater clarity once he calls Xia, who pieces together a shocking revelation: In the years after World War II, as many as half a million barrels of toxic waste had been quietly dumped into the ocean – and the consequences continue to haunt the world today.

A documentary produced in 1979 to celebrate the centenary of the birth of Albert Einstein. Narrated and hosted by Peter Ustinov and written by Nigel Calder.

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A team of international scientists attempt to document the first-ever image of a black hole.

Before the internet. Before social media. Before breaking news. The victims of Thalidomide had to rely on something even more extraordinary to fight their corner: Investigative journalism. This is the story of how Harold Evans fought and won the battle of his and many other lives.

NASA launches its most ambitious hunt for traces of life on Mars, landing a car-sized rover in a rocky, ancient river delta. The rover will stow samples for possible return to Earth and test technology that may pave the way for human travel to Mars.