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An Edinburgh professor and assorted colleagues follow an explorer's trail down an extinct Icelandic volcano to the earth's center.

Adventurer Allan Quartermain leads an expedition into uncharted African territory in an attempt to locate an explorer who went missing during his search for the fabled diamond mines of King Solomon.

An anthropologist/paleontologist and his daughter, while travelling through the southwestern U.S., stumble upon a colony of living, breathing gargoyles.

A skilled flyer but very rebellious young seagull is kicked out of his clan. However, instead of being sad or lonely, he decides to enjoy and explore his newfound freedom.

Teenagers from a rural community and their high school science teacher join forces to battle a giant mutant spider.

Scientists use a gigantic drilling machine for an expedition to the center of the earth.

After being bitten by a bat in a cave, a doctor undergoes an accelerating transformation into a man-bat, which ruins his vacation and causes considerable distress for his wife.

Dr. Conway has perfected a machine that predicts earthquakes, and has determined that one will strike California within 24 hours. A computer analysis determines that the entire world would explode within a little more than 28 days.

A man recalls the story of how his bees implanted in him a bee television, causing him to lose all perception of space, time, and self in the deserts of the American West.

Released after serving 15 years in prison for train robbery Pete Carver being the only survivor of the gang goes looking for the loot in the caves where it was hidden.

David Attenborough sets out on an intrepid quest across seven continents to create a unique television event to celebrate the wealth of natural features that makes Planet Earth so varied, so distinctive and so spectacularly beautiful.

On a caravan to California, Dr. Holt Ezra punishes his wife Hetty for flirting with young men. The caravan stops in the town of Independence.

A tour of the United States from New York to Death Valley, from Canada to the Mexican border. Created in 1945 by the Warner Bros. Studio to sell U.S. Savings Bonds, "America the Beautiful" opens to the patriotic strains of the song of the same name. The film paints a picture of the United States as an industrious society on the move.

Dr. Mark Christopher is a famous scientist who believes from his Russian friend's cryptic message that the USSR will initiate a New Year's Day nuclear attack on the United States. Unable to convince his associates to act on this information, Christopher, his son, and a small band of followers, he takes shelter deep inside Carlsbad Caverns Tod and Buz assist Paula Shay, a devious newspaper reporter who wants to interview Dr. Christopher.

Just for a moment, imagine a universe awash with life, where we humans are not the only intelligent beings around. What might these alien races look like? Could we communicate with them, or even recognise them as intelligent? And what would they make of our violent and dangerous species? Might they take one look, and decide not to bother with such primitive beings? A planetary nursery filled with spiteful, galactic infants. On the other hand, in our imaginary scenario, they may enrich us with scientific knowledge beyond our imagination. Or could an encounter with aliens have a more destructive outcome? It could be a bad day for human kind. But relax, it's just make believe, it could never happen, could it? A mysterious crash in Roswell, New Mexico during the 1940s convinced many that our planet is being visited by space aliens. Crop circles in Britain have only added fuel to the fire. Few scientists doubt that life indeed exists elsewhere, but some believe we're more likely to make contact via radio waves. Join the search for extra-terrestrials and hear from scientists who think we are on the verge of making contact.

The evolution of mammals continues with the focus on some placental species including emphasis on bats, whales and dolphins.

Colton and Jack are exploring the deep underground of Carlsbad Caverns in New Mexico. They'll check out the famous Big Room and then do some wild caving where they get a bit more than they bargain for thanks to monsoon season.