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Planet Earth - Seven Wonders of the Ancient World
Seven Wonders of
 the Ancient World

Seven Wonders of the Ancient World


BBC | Science


The Seven Wonders of the World (or the Seven Wonders of the Ancient World) refers to remarkable constructions of classical antiquity listed by various authors in guidebooks popular among the ancient Hellenic tourists, particularly in the 1st and 2nd centuries BC. The most prominent of these, the versions by Antipater of Sidon and an observer identified as Philo of Byzantium, comprise seven works located around the eastern Mediterranean rim. The original list inspired innumerable versions through the ages, often listing seven entries. Of the original Seven Wonders, only one—the Great Pyramid of Giza, the oldest of the ancient wonders—remains relatively intact.

Here with Watch Documentaries 360 in this documentary Seven Wonders of the Ancient World.


[- Planet Earth - Seven Wonders of the Ancient World -]




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 - Stolen Innocence

Stolen Innocence

Stolen Innocence

FBI Crime Documentary
Science | Crime


Eight-year-old Sandra Cantu is playing outside her mobile home in Tracy, California when she vanishes into thin air. Only a surveillance tape provides clues about who took her. Local authorities call in the FBI's specialized Child Abduction Response Unit, as they race to find Sandra alive. The FBI's list of potential suspects grows frighteningly long as they discover sex offenders and predators who live in the trailer park. Even a Sunday School teacher raises their suspicions. When Sandra's body is eventually found, they must race to stop the killer before another child is murdered.
Here with Watch Documentaries 360 in the series of in this episode Stolen Innocence.


[- - Stolen Innocence -]




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Cosmic Voyage - Cosmic Voyage
Cosmic Voyage

Cosmic Voyage

Science
Space | Universe


Cosmic Voyage is a 1996 short documentary film produced in the IMAX format, directed by Bayley Silleck, produced by Jeffrey Marvin, and narrated by Morgan Freeman. The film was presented by the Smithsonian Institution's National Air and Space Museum,[1] and played in IMAX theaters worldwide.
en.wikipedia.org

Here with Watch Documentaries 360 in the series of Cosmic Voyage in this episode Cosmic Voyage.


[- Cosmic Voyage -]




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 - Earthquakes: The Terrifying Truth

Earthquakes
The Terrifying Truth

Earthquakes: The Terrifying Truth

World of Discovery
Science | Nature | Natural Disaster


In the twentieth century, earthquakes have killed hundreds of thousands of people and caused billions of dollars in damage. Seismologists predict the worst is yet to come.

With the help of astonishing footage and interviews, the show reveals the shocking and frightening secrets of this natural killer. You'll discover why New Yorkers and Bostonians should fear earthquakes just as much as Californians, why Tokyo could literally burn to the ground at any time, why Los Angeles could experience another major quake soon, and what will happen if the "Big One" hits.

Here with Watch Documentaries 360 in this documentaries Earthquakes: The Terrifying Truth.


[- - Earthquakes: The Terrifying Truth -]




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Strip The Cosmo - Black Holes
Strip The Cosmo
Black Holes

Black Holes

Strip The Cosmo
Discovery Science | Science | Space | Universe



We strip apart black holes, one of the most feared objects in the universe, and tear off swirling galaxies of stars, planets, and cosmic dust layer by layer to explore the secrets of these hungry menaces lurking right on our cosmic doorstep.

Here with Watch Documentaries 360 in the series of Strip The Cosmo in this episode Black Holes.


[- Strip The Cosmos - Black Holes -]




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 - Al Qaeda Plane Hijack

Al Qaeda Plane Hijack

Al Qaeda Plane Hijack


Documentary Channel


Al Qaeda Plane Hijack - Documentary Film About Al Qaeda Plane Hijacking.

Al-Qaeda, translation: "The Base" and conversely meant al-Qaida and often al-Qa'ida) is a global militant Islamist organization started by Osama bin Laden, Abdullah Azzam, and several various other militants, at some point between August 1988 and late 1989, with sources traceable to the Soviet war in Afghanistan. During the Syrian civil war, al-Qaeda factions began battling each various other, as well as the Kurds and the Syrian government.

Al-Qaeda has actually positioned assaults on military and private targets in numerous countries, consisting of the September 11 attacks, the 1998 United States embassy battles and the 2002 Bali battles. The United States government reacted to the September 11 strikes by releasing the "War on Terror". With the loss of crucial leaders, winding up in the death of Osama container Laden, al-Qaeda's procedures have devolved from activities that were regulated from the leading down, to actions by franchise business connected teams and lone-wolf drivers.
Here with Watch Documentaries 360 in the series of in this episode Al Qaeda Plane Hijack.


[- - Al Qaeda Plane Hijack -]




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How The Earth Was Made - The Ring of Fire
How The Earth Was Made
The Ring of Fire

The Ring of Fire

How The Earth Was Made
National Geographic | Science | Nature | Earth


The Ring of Fire is an area where a large number of earthquakes and volcanic eruptions occur in the basin of the Pacific Ocean. In a 40,000 km (25,000 mi) horseshoe shape, it is associated with a nearly continuous series of oceanic trenches, volcanic arcs, and volcanic belts and/or plate movements.It has 452 volcanoes and is home to over 75% of the world's active and dormant volcanoes. It is sometimes called the circum-Pacific belt or the circum-Pacific seismic belt.
About 90% of the world's earthquakes and 81% of the world's largest earthquakes occur along the Ring of Fire. The next most seismic region (5--6% of earthquakes and 17% of the world's largest earthquakes) is the Alpide belt, which extends from Java to Sumatra through the Himalayas, the Mediterranean, and out into the Atlantic. The Mid-Atlantic Ridge is the third most prominent earthquake belt.
The Ring of Fire is a direct result of plate tectonics and the movement and collisions of lithospheric plates. The eastern section of the ring is the result of the Nazca Plate and the Cocos Plate being subducted beneath the westward moving South American Plate. The Cocos Plate is being subducted beneath the Caribbean Plate, in Central America. A portion of the Pacific Plate along with the small Juan de Fuca Plate are being subducted beneath the North American Plate. Along the northern portion, the northwestward-moving Pacific plate is being subducted beneath the Aleutian Islands arc. Farther west, the Pacific plate is being subducted along the Kamchatka Peninsula arcs on south past Japan. The southern portion is more complex, with a number of smaller tectonic plates in collision with the Pacific plate from the Mariana Islands, the Philippines, Bougainville, Tonga, and New Zealand; this portion excludes Australia, since it lies in the center of its tectonic plate. Indonesia lies between the Ring of Fire along the northeastern islands adjacent to and including New Guinea and the Alpide belt along the south and west from Sumatra, Java, Bali, Flores, and Timor. The famous and very active San Andreas Fault zone of California is a transform fault which offsets a portion of the East Pacific Rise under southwestern United States and Mexico. The motion of the fault generates numerous small earthquakes, at multiple times a day, most of which are too small to be felt. The active Queen Charlotte Fault on the west coast of the Haida Gwaii, British Columbia, Canada, has generated three large earthquakes during the 20th century: a magnitude 7 event in 1929; a magnitude 8.1 in 1949 (Canada's largest recorded earthquake); and a magnitude 7.4 in 1970.
en.wikipedia.org

Here with Watch Documentaries 360 in the series of How The Earth Was Made in this episode The Ring of Fire.


[- How The Earth Was Made - The Ring of Fire -]




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 - The History of Mariana Trench

The History of Mariana Trench

The History of Mariana Trench


Science | Nature | Technology


The Mariana Trench or Marianas Trench is the deepest part of the world's oceans. It is located in the western Pacific Ocean, to the east of the Mariana Islands. The trench is about 2,550 kilometres (1,580 mi) long but has an average width of only 69 kilometres (43 mi). It reaches a maximum-known depth of 10,994 m (± 40 m) or 6.831 mi (36,070 ± 131 ft) at the Challenger Deep, a small slot-shaped valley in its floor, at its southern end, although some unrepeated measurements place the deepest portion at 11.03 kilometres (6.85 mi).

At the bottom of the trench the water column above exerts a pressure of 1,086 bars (15,750 psi), over 1000 times the standard atmospheric pressure at sea level. At this pressure the density of water is increased by 4.96%, making 95 litres of water under the pressure of the Challenger Deep contain the same mass as 100 litres at the surface. The temperature at the bottom is 1 to 4 °C.

The trench is not the part of the seafloor closest to the center of the Earth. This is because the Earth is not a perfect sphere: its radius is about 25 kilometres (16 mi) less at the poles than at the equator. As a result, parts of the Arctic Ocean seabed are at least 13 kilometres (8.1 mi) closer to the Earth's center than the Challenger Deep seafloor.

Xenophyophores have been found in the trench by Scripps Institution of Oceanography researchers at a record depth of 10.6 km (6.6 mi) below the sea surface. On 17 March 2013, researchers reported data that suggested microbial life forms thrive within the trench.

Here with Watch Documentaries 360 in this documentary The History of Mariana Trench.


[- The History of Mariana Trench -]




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 - The History of San Andreas Fault

The History of San Andreas Fault

The History of San Andreas Fault

Natural Disaster
Science 


The San Andreas Fault is a continental transform fault that extends roughly 810 miles through California. It forms the tectonic boundary between the Pacific Plate and the North American Plate, and its motion is right-lateral strike-slip (horizontal). The fault divides into three segments, each with different characteristics and a different degree of earthquake risk, the most significant being the southern segment, which passes within about 35 miles of Los Angeles.

A study in 2006 concluded that the San Andreas fault has reached a sufficient stress level for the next "big one", or a M ≥ 7.0, to occur. It also concluded that the risk of a large earthquake may be increasing more rapidly than researchers had previously thought. The paper stated that, while the San Andreas Fault had experienced massive earthquakes in the central (1857) and northern (1906) segments, the southern section of the fault has not seen any similar rupture for at least 300 years. Such an event would result in substantial damage to Palm Springs and other cities in San Bernardino, Riverside and Imperial counties in California, and Mexicali municipality in Baja California. It would be felt throughout much of Southern California, including densely populated areas of San Bernardino, Los Angeles, Orange County, San Diego, Ensenada and Tijuana, Baja California, San Luis Rio Colorado in Sonora and Yuma, Arizona.

As both the public and scientific community continue to speculate on the size of the next earthquake to strike California, predicting major earthquakes with sufficient precision to warrant taking increased precautions has long been sought but remains elusive.[10] Nonetheless, the 2008 Uniform California Earthquake Rupture Forecast (UCERF) has estimated that the probability of an M ≥ 6.7 earthquake within the next 30 years on the northern and southern segments of the San Andreas fault is somewhere between 21% and 59%, respectively.
Here with Watch Documentaries 360 in this documentary The History of San Andreas Fault.


[- - The History of San Andreas Fault -]




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Planet Earth - Ocean Deep
Planet Earth
Ocean Deep

Ocean Deep

Planet Earth
BBC | Science | Nature


Planet Earth Episode 11 Ocean Deep - BBC Documentary - Sir David Attenborough

The final instalment concentrates on the least explored area of the planet—the deep ocean. It begins with a whale shark used as a shield by a shoal of bait fish to protect themselves from yellowfin tuna. Also shown is an oceanic whitetip shark trailing rainbow runners. Meanwhile, a 500-strong school of dolphins head for the Azores, where they work together to feast on scad mackerel along with a flock of shearwaters. Down in the ocean's furthest reaches, some creatures defy classification.

On the sea floor, scavengers such as the spider crab bide their time, awaiting carrion from above. The volcanic mountain chain at the bottom of the Atlantic Ocean also sustains life through the bacteria that surround its sulphide vents. There are thought to be around 30,000 undersea volcanoes, some of them taller than Mount Everest. Their sheer cliffs provide anchorage for several corals and sponges. Nearer the surface, the currents that surround these seamounts force nutrients up from below and thus marine life around them is abundant. Ascension Island is a nesting ground for frigate-birds and green turtles.

Off the Mexican coast, a large group of sailfish feed on another shoal of bait fish, changing colour to signal their intentions to each other, allowing them to coordinate their attack. The last sequence depicts the largest animal on Earth—the blue whale, of which 300,000 once roamed the world's oceans. Now fewer than 3% remain. Planet Earth Diaries shows the search in the Bahamas for oceanic whitetip sharks.

Here with Watch Documentaries 360 in the series of Planet Earth in this episode Ocean Deep.


[- Planet Earth - Ocean Deep -]




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Planet Earth - Seasonal Forests
Planet Earth
Seasonal Forests

Seasonal Forests

Planet Earth
BBC | Science | Nature


Planet Earth Episode 10 Seasonal Forests - BBC Documentary - Sir David Attenborough

The penultimate episode surveys the coniferous and deciduous seasonal woodland habitats-the most extensive forests on Earth. Conifers begin sparsely in the subarctic but soon dominate the land, and the taiga circles the globe, containing a third of all the Earth's trees.

Few creatures can survive the Arctic climate year round, but the moose and wolverine are exceptions. 1,600 kilometres (990 mi) to the south, on the Pacific coast of North America, conifers have reached their full potential. These include some of the world's tallest trees: the redwoods. Here, a pine marten is shown stalking a squirrel, and great grey owl chicks take their first flight.

Further south still, in Chile's Valdivian forests, a population of smaller animals exist, including the pudú and the kodkod. During spring in a European broad-leafed forest, a mandarin duck leads its day-old family to leap from its tree trunk nest to the leaf litter below. The Bialowieza Forest typifies the habitat that characterised Europe around 6,000 years ago: only a fragment remains in Poland and Belarus.

On a summer night on North America's east coast, periodical cicadas emerge en masse to mate—an event that occurs every seventeen years. After revisiting Russia's Amur leopards in winter, a time-lapse sequence illustrates the effect of the ensuing spring on the deciduous forest floor. In India's teak forests, a langur monkey strays too far from the chital that act as its sentinels and falls prey to a tiger. In Madagascar, mouse lemurs feed on the nectar of flowering baobab trees. Planet Earth Diaries explains how aerial shots of the baobab were achieved by the use of a cinebulle, an adapted hot air balloon.

Here with Watch Documentaries 360 in the series of Planet Earth in this episode Seasonal Forests.


[- Planet Earth - Seasonal Forests -]




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Planet Earth - Shallow Seas
Planet Earth
Shallow Seas

Shallow Seas

Planet Earth
BBC | Science | Nature


Planet Earth Episode 9 Shallow Seas - BBC Documentary - David Attenborough: This programme is devoted to the shallow seas that fringe the world's continents. Although they constitute 8% of the oceans, they contain most marine life. As humpback whales return to breeding grounds in the tropics, a mother and its calf are followed. While the latter takes in up to 500 litres of milk a day, its parent will starve until it travels back to the poles to feed-and it must do this while it still has sufficient energy left for the journey.

The coral reefs of Indonesia are home to the biggest variety of ocean dwellers. Examples include banded sea kraits, which ally themselves with goatfish and trevally in order to hunt. In Western Australia, dolphins "hydroplane" in the shallowest waters to catch a meal, while in Bahrain, 100,000 Socotra cormorants rely on shamals that blow sand grains into the nearby Persian Gulf, transforming it into a rich fishing ground. The appearance of algae in the spring starts a food chain that leads to an abundant harvest, and sea lions and dusky dolphins are among those taking advantage of it.

In Southern Africa, as chokka squid are preyed on by short-tail stingray, the Cape fur seals that share the waters are hunted by the world's largest predatory fish-the great white shark. On Marion Island in the Indian Ocean, a group of king penguins must cross a beach occupied by fur seals that do not hesitate to attack them. Planet Earth Diaries shows the difficulties of filming the one-second strike of a great white shark, filmed by Simon King.
Here with Watch Documentaries 360 in the series of Planet Earth in this episode Shallow Seas.


[- Planet Earth - Shallow Seas -]




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Planet Earth - Jungles
Planet Earth
Jungles

Jungles

Planet Earth
BBC | Science | Nature


Planet Earth Episode 8 Jungles - BBC Documentary - David Attenborough: This episode examines jungles and tropical rainforests. These environments occupy only 3% of the land yet are home to over half of the world's species. New Guinea is inhabited by almost 40 kinds of birds of paradise, which avoid conflict with each other by living in different parts of the island. Some of their elaborate courtship displays are shown.

Within the dense forest canopy, sunlight is prized, and the death of a tree triggers a race by saplings to fill the vacant space. Figs are a widespread and popular food, and as many as 44 types of bird and monkey have been observed picking from a single tree. The sounds of the jungle throughout the day are explored, from the early morning calls of siamangs and orangutans to the nocturnal cacophony of courting tree frogs. The importance of fungi to the rainforest is illustrated by a sequence of them fruiting, including a parasite called cordyceps. The mutual benefits of the relationship between carnivorous pitcher plants and red crab spiders is also discussed.

In the Congo, roaming forest elephants are shown reaching a clearing to feed on essential clay minerals within the mud. Finally, chimpanzees are one of the few jungle animals able to traverse both the forest floor and the canopy in search of food. In Uganda, members of a 150-strong community of the primates mount a raid into neighbouring territory in order to gain control of it. Planet Earth Diaries looks at filming displaying birds of paradise, focusing mainly on the filming of the six-plumed bird of paradise.

Here with Watch Documentaries 360 in the series of Planet Earth in this episode Jungles.


[- Planet Earth - Jungles -]




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Planet Earth - Great Plains
Planet Earth
Great Plains

Great Plains

Planet Earth
BBC | Science | Nature


Planet Earth Episode 7 Great Plains - BBC Documentary - Sir David Attenborough: This episode deals with savanna, steppe, tundra, prairie, and looks at the importance and resilience of grasses in such treeless ecosystems.

Their vast expanses contain the largest concentration of animal life. Over Africa's savanna, a swarm of 1.5 billion Red-billed Queleas are caught on camera, the largest flock of birds ever depicted. In Outer Mongolia, a herd of Mongolian gazelle flee a bush fire and is forced to find new grazing, but grass self-repairs rapidly and soon reappears.

On the Arctic tundra during spring, millions of migratory snow geese arrive to breed and their young are preyed on by Arctic foxes. Meanwhile, time-lapse photography depicts moving herds of caribou as a calf is brought down by a chasing wolf. On the North American prairie, bison engage in the ritual to establish the dominant males.

The Tibetan Plateau is the highest of the plains and despite its relative lack of grass, animals do survive there, including yak and wild ass. However, the area's most numerous resident is the pika, whose nemesis is the Tibetan fox. In tropical India, the tall grasses hide some of the largest creatures and also the smallest, such as the pygmy hog. The final sequence depicts African bush elephants that are forced to share a waterhole with a pride of thirty lions. The insufficient water makes it an uneasy alliance and the latter gain the upper hand during the night when their hunger drives them to hunt and eventually kill one of the pachyderms. Planet Earth Diaries explains how the lion hunt was filmed in darkness using infrared light.

Here with Watch Documentaries 360 in the series of Planet Earth in this episode Great Plains.


[- Planet Earth - Great Plains -]




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Oil Apocalypse
Oil Apocalypse

Oil Apocalypse

Mega Disasters
Science | Earth

Country:
Project:

Peak oil, an event based on M. King Hubbert's theory, is the point in time when the maximum rate of extraction of petroleum is reached, after which the rate of production is expected to enter terminal decline. Peak oil theory is based on the observed rise, peak, (sometimes rapid) fall, and depletion of aggregate production rate in oil fields over time. Mostly due to the development of new production techniques and the exploitation of unconventional supplies, Hubbert's original predictions for world production proved premature. Peak oil is often confused with oil depletion; peak oil is the point of maximum production, while depletion refers to a period of falling reserves and supply.

Here with Watch Documentaries 360 in the series of Extreme Engineering in this episode Oil Apocalypse.


[- Mega Disasters - Oil Apocalypse -]




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Planet Earth - Ice Worlds
Planet Earth
Ice Worlds

Ice Worlds

Planet Earth
BBC | Science | Nature


Planet Earth Episode 6 Ice Worlds - BBC Documentary - David Attenborough: The sixth programme looks at the regions of the Arctic and Antarctica. The latter contains 90% of the world's ice, and stays largely deserted until the spring, when visitors arrive to harvest its waters.

Snow petrels take their place on nunataks and begin to court, but are preyed on by South Polar skuas. During summer, a pod of humpback whales hunt krill by creating a spiralling net of bubbles. The onset of winter sees the journey of emperor penguins to their breeding grounds, 160 kilometres (99 mi) inland. Their eggs transferred to the males for safekeeping, the females return to the ocean while their partners huddle into large groups to endure the extreme cold.

At the northern end of the planet, Arctic residents include musk oxen, who are hunted by Arctic foxes and wolves. A female polar bear and her two cubs head off across the ice to look for food. As the sun melts the ice, a glimpse of the Earth's potential future reveals a male polar bear that is unable to find a firm footing anywhere and has to resort to swimming-which it cannot do indefinitely. Its desperate need to eat brings it to a colony of walrus. Although it attacks repeatedly, the herd is successful in evading it by returning to the sea. Wounded and unable to feed, the bear will not survive. Meanwhile, back in Antarctica, the eggs of the emperor penguins finally hatch.

Planet Earth Diaries tells of the battle with the elements to obtain the penguin footage and of unwelcome visits from polar bears.

Here with Watch Documentaries 360 in the series of Planet Earth in this episode Ice Worlds.


[- Planet Earth - Ice Worlds -]




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Deserts
Deserts

Deserts

Planet Earth
BBC | Science | Nature


Planet Earth Episode 5 Deserts - BBC Documentary - David Attenborough: This instalment features the harsh environment that covers one-third of the land on Earth: the deserts.

Due to Siberian winds, Mongolia's Gobi Desert reaches extremes of temperature like no other, ranging from -40 °C to +50 °C (-40 °F to 122 °F). It is home to the rare Bactrian camel, which eats snow to maintain its fluid level and must limit itself to 10 litres (2.6 U.S. gal; 2.2 imp gal) a day if it is not to prove fatal.

Africa's Sahara is the size of the USA, and just one of its severe dust storms could cover the whole of Great Britain. While some creatures, such as the dromedary, take them in their stride, for others the only escape from such bombardments is to bury themselves in the sand.

Few rocks can resist them either and the outcrops shown in Egypt's White Desert are being inexorably eroded. The biggest dunes (300 m or 1,000 ft high) are found in Namibia, while other deserts featured are Death Valley in California and Nevada, the Sonoran in Arizona, the deserts of Utah, all in the United States, the Atacama in Chile, and areas of the Australian outback.

Animals are shown searching for food and surviving in such an unforgiving habitat: African elephants that walk up to 80 kilometres (50 mi) per day to find food; lions (hunting oryx); red kangaroos (which moisten their forelegs with saliva to keep cool); nocturnal fennec foxes, acrobatic flat lizards feeding on black flies, and duelling Nubian ibex. The final sequence illustrates one of nature's most fearsome spectacles: a billion-strong plague of desert locusts, destroying all vegetation in its path. Planet Earth Diaries explains how the hunt for the elusive Bactrian camels necessitated a two-month trek in Mongolia.

Here with Watch Documentaries 360 in the series of Planet Earth in this episode Deserts.


[- Planet Earth - Deserts -]




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Mega Tsunami
Mega Tsunami

Mega Tsunami

Mega Disasters
Science | Earth


In 6,000 BC, 8,000 years before the 2004 Indian Ocean tsunami, a paleotsunami whose waves reach taller than the Statue of Liberty allegedly was generated by a landslide from Mount Etna and ravaged the coasts of the Mediterranean, devastating ancient villages and killing untold numbers. A team of scientists pieces together evidence of this megatsunami and reveals the face of this ancient tsunami for the first time. 3-D computer generated animation recreates the massive waves that may have changed the course of history.

Megatsunami is an informal term to describe a tsunami that has initial wave heights that are much larger than normal tsunamis. Unlike usual tsunamis which originate from tectonic activity and the raising or lowering of the sea floor known megatsunamis have originated from a large scale landslide, collision, or volcanic eruption event.

Here with Watch Documentaries 360 in the series of Mega Disasters in this episode Mega Tsunami.


[- Mega Disasters - Mega Tsunami -]




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Extreme Engineering - Cooper River Bridge
Extreme Engineering
Cooper River Bridge

Cooper River Bridge

Extreme Engineering
Discovery Channel | Science | Technology
October 5, 2004

Country: United States
Project: Cooper River Bridge in Charleston, South Carolina

These men are are building the longest bridges in it's type ever attempted in North America. What they're doing is in the worst possible place. Charteton South Carolina, hurricanes, earthquakes and the world's biggest tanker ships posed deadly triple threat to the bridge and to the workmen building. If they succeed, trust will manage to remain one of the nation's most violent cost. If they fail, this flower of the South stay there in history once and for all.

The Cooper River Bridge Run is an annual 10-kilometer (6.2 mi) one-way road running event across the Arthur Ravenel Jr. Bridge held in the cities of Mount Pleasant and Charleston in South Carolina, on the Saturday before Easter weekend. The Bridge Run is the only competition in South Carolina sanctioned by USA Track and Field as an elite event. Based on number of race finishers, the event is the third largest 10K and the fifth largest road race in the United States.

Here with Watch Documentaries 360 in the series of Extreme Engineering in this episode Cooper River Bridge.

wikipedia.org

[- Extreme Engineering - Cooper River Bridge -]




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Caves
Caves

Caves

Planet Earth
BBC | Science | Nature


Planet Earth Episode 4 Caves - Sir David Attenborough - BBC Documentary: This episode explores "Planet Earth's final frontier": Caves.

At a depth of 400 metres (1,300 ft), Mexico's Cave of Swallows is Earth's deepest Pit Cave freefall drop, allowing entry by BASE jumpers. Its volume could contain New York City's Empire State Building. In this episode divers explore the otherworldly cenotes of the Yucatán Peninsula, appearing to be flying in water (because it is so clear), allowing viewers a glimpse of the hundreds of kilometers of caves which have already been mapped. Also featured is Borneo's Deer Cave and Gomantong Cave.

Inhabitants of the former include three million wrinkle-lipped free-tailed bat, which have deposited guano on to an enormous mound. In Gomantong Cave, guano is many metres high and is blanketed with hundreds of thousands of cockroaches and other invertebrates. Also depicted are eyeless, subterranean creatures, such as the Texas blind salamander and (bizarrely) a species of crab.

Carlsbad Caverns National Park is featured with its calcite formations. Mexico's Cueva de Villa Luz is also featured, with its flowing stream of sulphuric acid and snottite formations made of living bacteria. A fish species, the shortfin molly, has adapted to this habitat. The programme ends in New Mexico's Lechuguilla Cave (discovered in 1986) where sulphuric acid has produced unusually ornate, gypsum crystal formations. Planet Earth Diaries reveals how a camera team spent a month among the cockroaches on the guano mound in Gomantong Cave and describes the logistics required to photograph Lechuguilla. Permission for the latter took two years and local authorities are unlikely to allow another visit.

Here with Watch Documentaries 360 in the series of Planet Earth in this episode Caves.


[- Planet Earth - Caves -]




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