Wiping out infectious diseases in the 21st century.
Scientists chart changes to the planet for the past three decades.
Results from the first trial of a tiny pump that can save the lives of heart patients.
A mathematical formula changes the world financial markets and capitalism.
Fifty cats are tagged with GPS collars, recording their every movement.
Scientists try to determine the cause of a 1999 avalanche which killed 31 people in Austria.
Some patients use thalidomide despite its tragic history.
Evidence supports scientific rejection of the possibility of Atlantis.
Work on the International Space Station continues in spite of doubts about its feasibility.
Building chimpanzee sanctuaries to house veterans of scientific experiments.
Denying play and laughter to young animals, including children, can have lasting consequences.
Investigating whether fat or sugar is worse for people with some surprising and unsettling results.
Astronomers believe some mysterious explosions in space come from the violent collapse of giant stars.
The impact humans inflict on the oceans.
Two German tourists uncover the frozen body of an ancient farmer in the Alps.
Examines a controversial treatment plan for children with severe behavioural disorders. The treatment isolates children completely from the outside world.
A controversial theory claims Earth was entirely covered in ice, up to a kilometre thick, for millions of years.
Documentary about the controversial use of Ecstasy to counteract symptoms associated with Parkinson's disease.
An apparently harmless seaweed has mutated into a monster, choking indigenous life in the Mediterranean.
A fossilized jawbone could provide vital clues to how humans evolved.
Demolition of an apartment block in downtown Miami exposes a mysterious circle of holes cut into bedrock.
The history of the Hubble Space Telescope.
Exploration of the possibility of life on Mars.
Exploring the enduring myth of the lost civilization of Atlantis.
The consequences of raising a boy as a girl are examined.
The roles of black holes in the creation of our galaxy.
Evidence of different species of dinosaur is found in South America.
Archaeologists try to save the treasures of an ancient city in Turkey.
An expedition discovers the crash site of a missing British airliner.
Until 1985, scientists believed only two forms of carbon existed.
Alternative therapies; positive thinking.
Two Scottish pathologists research a topic linked to embryology, cancer research and the immune system.
The western Antarctic ice sheet is the last of its kind on Earth, and how it reacts to global warming will determine the fate of the world's coastlines.
British and American teams explore Antarctica.
Despite the average temperature of minus 49 degrees Celsius and winds of 200km an hour, many people try to settle Antarctica each year.
At 19, Ian Waterman caught a virus which destroyed half his nervous system, leaving him unable to move or feel his body.
The drama of the struggle for survival on board the Mir space station.
Professor; dog expert; immunologist; theory.
Children with attention deficit hyperactivity disorder are followed through diagnosis to therapy.
A scientist discovers viruses can kill bacteria.
Dr. Paul Zamecnik wants to use DNA to cure disease.
Tiny group of genes determine body shape.
In 1997, scientists clone a single cell to create a whole new animal.
New anti-personnel weapons.
Changes in modern living affect male species.
The mysterious condition known as synaesthesia gives insight into the workings of the human mind.
Debates address fetal surgeries, fetal-tissue banks and fetal-limb transplants.
Scientists try to understand the mixing of the senses experienced in synesthesia.
Professor Manfred Korfmann has been excavating the site of Troy since 1988.
Russian scientists plug torpedo tubes to prevent the release of plutonium into the ocean.
Scientists John Bahcall and Ray Davis discover neutrinos.
One theory suggests that tyrannosaurus rex, famed as a terrifying carnivore, was in fact a lumbering scavenger with bad breath.
Human noise pollution disturbs the complex sonar systems essential to the whale's survival.
Diamond labs are starting to produce synthetic diamonds which could threaten natural diamond traders.
The infamous drug thalidomide begins to make a comeback as a radical treatment for incurable blood cancers.
The concept of nanotechnology was given a big boost by Dr. Jan Hendrik Schon's invention of a computer transistor made of a single organic molecule.
A Bronze-Age metal disc suggests that civilisation reached Europe far earlier than had been thought.
An investigation into the minds of victims of alien abductions.
A popular diet claims that eating fat and avoiding carbohydrates can make a person thin.
A chimp made famous by naturalist Jane Goodall attacks and kills a human baby.
The big-bang theory is one explanation for the beginning of life on Earth.
Einstein's theories on time travel have intrigued eccentric amateurs and brilliant scientists.
Percy Pilcher built a flying machine four years before the Wright Brothers, but tragedy ensured he would never be able to test it.
Scientific attempts to find a vaccine for HIV have been constantly thwarted as the virus alters itself.
Investigating the events that resulted in the destruction of the space shuttle Columbia.
The history, meaning and controversy over the Dead Sea Scrolls.
American journalist Michael Drosnin claims that he can see into the future using a 3000-year-old code hidden in the Bible.
Scientists try to develop a space-based defense system.
Some believe technology has the potential to link computing directly to thoughts.
A late-16th-century shipwreck is found off the Channel Islands.
Examing the disease and whether the world has overreacted to the outbreak.
A radical approach to medicine suggests diseases may be beneficial.
Jonathan Miller retraces the first British anthropological expedition ever undertaken.
New ideas in the study of human origins.
Investigation into the 2001 crash of American Airlines Flight 587.
Scientists search for a connection between biology and religious belief.
Geologist Geoff King predicted a deadly 1999 earthquake.
The possibility of time travel.
An ancient stone found in an African cave suggests that the Neanderthals may have been smarter than previously believed.
The use of drugs in the treatment of sexual problems; the development of Viagra.
A study reveals that, in many diagnoses of permanent vegetative state, patients are actually conscious.
Scientists seek ways to destroy asteroids on a collision course with Earth.
Many countries produce wines using scientific techniques pioneered in Australia and America.
Scientists try to learn if there are planets outside Earth's solar system.
Climate scientists discover a phenomenon that may have contributed to the deaths of hundreds of thousands through drought and famine.
Polsters and survey takers assault the public.
Scientists try to uncover the secrets of Lake Vostok, which lies under four kilometers of ice.
A gene treatment procedure for cystic fibrosis.
Ancient remains in England provide clues on human origins in Europe.
The Cassini-Huygens spacecraft's mission to Saturn provides stunning images of the solar system's most bewitching planet.
Las Vegas casinos fight back when college-educated bettors attempt to break the bank.
Scientists probe the meteoric impact that destroyed the dinosaurs.
Clues link the ice ages and human evolution to continental drift.
Increasing evidence suggests that the meteorite impact theory may not have been the real reason behind the extinction of the dinosaurs.
Intelligent technology; smart wings on aircraft; earthquake-sensing buildings.
A young boy rests perfectly preserved in a Santiago freezer.
Chechen terrorists take hundreds of people hostage in a Moscow theatre in October 2002.
A stone tablet found in Israel in 2001 seems to confirm the existence of a biblical temple.
Investigating the vitamin supplement industry.
Some scientists believe Britain could be heading toward an Alaskan-type climate.
A team of scientists try to answer the question of how the universe will end.
Volcanic eruptions in the Congo endanger millions of lives.
The amazing story of the Ice Maiden uncovered in the Altai mountains of Siberia.
Scientists research the sense of smell.
The role brain chemicals play in controlling aggression; lack of sleep contributes to the loss of one's temper; the link between brain damage and domestic violence.
Influential groups worldwide call for a humane, infallible method of capital punishment.
The demand for human corpses for medical use outstrips the supply.
After 650 years the pre-Columbian Moche civilization, known for metal work and jewelry, disappears.