Horizon: Which Universe Are We In?

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.

An accomplished molecular biologist moves out of the lab in a quest to make an encyclopedia documenting all the fruit fly species in North America.

A documentary chronicling the history of the telescope from the time of Galileo. Featuring interviews with leading scientists discussing Galileo's first use of the telescope to the latest discoveries in cosmology.

Near the cold Pyrenees of Iberia, surrounded by ancient and dark green forests, lies a strange land where the rain is scarce and the wind is always blowing. The soil is poor, there are no trees and the landscape resembles the moon. Is this what the future of desertification will look like? Incredible creatures with surprising behavior live in this strange landscape. The documentary explores a place with very dry skin but a wet hidden heart where even waterfowl or amphibians can live. Living in such conditions is not easy and only the toughest animals will survive.

In a world where 92 million Americans rely on statins as their lifeline, one man's unexpected health journey uncovers a medical mystery that could upend everything we think we know about heart health, cholesterol, and the ketogenic diet.

There’s something very odd going on in space – something that shouldn’t be possible. It is as though vast swathes of the universe are being hoovered up by a vast and unseen celestial vacuum cleaner. Sasha Kaslinsky, the scientist who discovered the phenomenon, is understandably nervous: ‘It left us quite unsettled and jittery’ he says, ‘because this is not something we planned to find’. The accidental discovery of what is ominously being called ‘dark flow’ not only has implications for the destinies of large numbers of galaxies – it also means that large numbers of scientists might have to find a new way of understanding the universe. Dark flow is the latest in a long line of phenomena that have threatened to re-write the textbooks. Does it herald a new era of understanding, or does it simply mean that everything we know about the universe is wrong? .

CERN and the University of California-Santa Barbara are collaborating in the search for the elusive substance that physicists and astronomers believe holds the universe together -- dark matter. Where is this search now in the realm of particle physics and what comes next?

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.

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.

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

The discovery of neuroplasticity, the fact that thoughts can change the structure and function of our brains, even into old age, is one of the most important breakthroughs in our understanding of the brain in recent times. In The Brain That Changes Itself, Dr Norman Doidge explores the profound implications of the changing brain in a way that will permanently alter the way we look at human possibility and human nature. The documentary examines a blind man who sinks a basketball; a woman with half a brain who leads a normal life; learning disorders, strokes and brain traumas that are improved and cured; and chronic pain that is alleviated. The vast expanse of the brain's possibility is still unrealized.

Oil is a primary energy source in the world. Global oil consumption reached approximately 95 million barrels per day but oil fields' quality is constantly declining. A team of Russian scientists came up with more accurate, cheaper, and faster technology that can increase the oil production rate. After all, modern civilization is built in the way that 'to live well' means 'consume more oil'