This Horizon documentary presents the US auto industry's response to clean-up the air in Los Angeles, California by the year 2007.

California Dreaming

The Day the Earth Melted

Two Weeks to Save the Earth

Documentary considering the nature of sudden death, the effects of coronary heart disease and the part they play.

Sudden Death

This Horizon episode tells the story of the top secret experiments carried out to test the effects of mustard gas.

Keen as Mustard

Horizon investigates the case against passive smoking and reveals new evidence of its danger.

Smokers Can Harm Your Health

Horizon reports on the new arms verification industry emerging due to the new arms control treaties.

Coming In from the Cold

Horizon follows astronomer's efforts to rescue the Hubble space telescope and restore its original planned performance.

Small Problems with the Mirror

Looks at the work of Earthwatch, and some of the many people who spend their holidays contributing to learning about the planet by helping on prehistoric digs, recording fish noises, tracking rodents, measuring grass an leaves and counting insects in places all over the world, often suffering much discomfort and boredom.

This episode of Horizon examines 20 years of research which has led to a new theory on how the earth's crust was made.

Looks at the phenomenon of the outbreaks of a lethal kidney disease amongst groups of people scattered around an area of the Balkans, covering Yugoslavia, Romania and Bulgaria, over the past 30 years.It considers the attempts and theories of scientists from all these countries over the years to find the cause of the disease.

The Curse of Karash

This Horizon interview presents Dr. Ulysses Seal who believes the "frozen zoo" concept is the best way to save vanishing species for the future generations.

Playing at Noah

This Horizon episode considers the pros and cons of "ecotourism" and the effects of tourism on the environment. The coral reefs of areas of Belize are suffering already from the effects tourists coming to the area. Rain forests and ape sanctuary areas employing the local community are also becoming a danger to the delicate environments.

Cashing in on Paradise

This episode of Horizon explores the Natural History Museum and its philosophy, both past and present. We look at some of the recent innovations that have been introduced in the past few years. The recent director of the museum, Dr. Neil Chalmers, justifies his policies, restructuring, and the academics. The scientists, who are adversely affected by the policies, air their own worries and concerns.

The Terracotta Time Machine

Horizon examines the problems and cartography involved in mapping mountains such as Mount Everest. They follow the history of of mapping from those surveys conducted by mountaineering expeditions and early explorers, to modern mapping techniques using planes and satellites. Horizon also considers the startling news that K2 may actually be the world's tallest mountain according to recent satellite calculations.

Measuring the Roof of the World

Horizon looks at archaeologist's new theories surrounding the population of the New World over 11,000 years ago

The First Americans

Documentary following the clean-up operation at Chernobyl and the elite team of Soviet scientists working in areas of radiation that would be considered lethal in the West, whilst they hunt for missing fuel, uranium and plutonium, anxious that these could cause a second accident.

Inside Chernobyl's Sarcophagus

Horizon presents a documentary on how virtual reality can make humans feel as if they are present in the computer simulated artificial world. What is the future of all this powerful, seductive technology?

Colonising Cyberspace

In this report, Horizon follows a group of eminent scientists who believe we have become too complacent about infectious diseases.

Emerging Viruses

Horizon explores the Camelford disaster, in which aluminium sulphate was accidentally added to drinking water in Cornwall in 1988.

Camelford - A Bitter Aftertaste

Several astronomers and scientists explore the concepts of "hot/cold dark space" and whether or not the "Big Bang" theory is actually correct, as well as considering the structures of galaxies.

Of Big Bangs, Stick Men and Galactic Holes

This story by Horizon looks at the expanding and controversial area of "smart drugs".

Food For Thought

In this Horizon episode, we look at the problems facing the Carl Zeiss optics company of Jena and other companies in the scientific sector of the former Eastern block countries. Following the reunification of Germany and the end of the Cold War, harsh economic conditions and the lack of scientific progress over the preceding decades in particular are explored.

The Long Road to the West

Horizon examines the social and scientific issues around the cholesterol debate.

Half Hearted About Semi-Skimmed

Considers some of the different theories surrounding the Tyrannosaurus Rex dinosaur, and other members of the same family, and shows how calculations about size, speed, weight, etc. are made from skeletons, some of them recently discovered in Montana. Scientists also use the latest x-ray/scanning techniques to examine skulls and bones for information.

T-Rex Exposed

Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.

California Dreaming

Seasons62

Season 28 Episodes23

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