When something strange is recorded flying in Mexico, some wonder if it\'s a witch reputed to kidnap children, others believe it\'s evidence of a new way to smuggle drugs or top-secret technology; the latest science helps experts investigate the truth.

When footage of a strange deep-sea vessel is uncovered, experts wonder if its evidence of an autonomous alien craft sent to explore earth, and using cutting-edge tech, investigators follow the clues to an unexpected explanation.

Un grupo de profesionales de la ciencia investigan la presencia de vida extraterrestre en cien galaxias del universo.

Un grupo de profesionales de la ciencia investigan la presencia de vida extraterrestre en cien galaxias del universo.

Sólo en Barajas, 5000 cámaras de seguridad, sistemas de escáner punteros y exclusivos de este aeropuerto y más de 750 funcionarios y agentes entre Agencia Tributaria y Guardia Civil trabajan para mantener la seguridad del recinto. ‘Control de fronteras: España’ acompaña a las fuerzas de seguridad del estado para descubrir cómo se vigilan nuestras fronteras.

Sólo en Barajas, 5000 cámaras de seguridad, sistemas de escáner punteros y exclusivos de este aeropuerto y más de 750 funcionarios y agentes entre Agencia Tributaria y Guardia Civil trabajan para mantener la seguridad del recinto. ‘Control de fronteras: España’ acompaña a las fuerzas de seguridad del estado para descubrir cómo se vigilan nuestras fronteras.

How do they build emergency bridges that can take the weight of a tank, make a marker pen that never fades, and design a 200 mph superbike?

How they make the tank piercing super bullet; how they forge the infamous torture weapon, the dentist\'s drill.

Giant Floating Power Stations; The World\'s Smallest Aircraft.

Crayons for Children and Artists; Mirrors in India.

Documental que trata un tema relacionado con Naturaleza y Animales.

Documental que trata un tema relacionado con Naturaleza y Animales.

Offshore of South Korea a strange line pattern is seen could this be military preparations or something else; images taken in 2014 of Mongolia show a strange pattern of rock that may mark the tomb of Genghis Khan; in 2012 an airline pilot spots a large \"island\" near New Zealand that should be open ocean further investigation sees a 200 mile long floating mass; in 2003 scientists see in a Marsh in southern Spain a massive ring pattern and structures buried in the mud could it be Atlantis or the biblical city of Tarshish; in the Algerian Sahara Desert a strange structure and rectangular shape is seen with no explanation could it be from the time of French nuclear testing in the desert; satellite images have confirmed that ISIS thugs have destroyed the ancient temple of Bael in Palmyra but renewed interest from archeologists have discovered more about this ancient city than was known before

En 1980, el gobierno de EE. UU. prohibió la nueva ocupación de humanos en el Refugio Nacional de Vida Silvestre del Ártico en Alaska, un área protegida, hogar de miles de animales nativos y un terreno prístino que abarca aproximadamente el tamaño de Carolina del Sur. Actualmente, solo un puñado de familias distribuidas en siete cabañas permitidas pueden permanecer en el refugio. En menos de 100 años, todos los permisos restantes llegarán a su vencimiento y no quedará presencia humana.

En 1980, el gobierno de EE. UU. prohibió la nueva ocupación de humanos en el Refugio Nacional de Vida Silvestre del Ártico en Alaska, un área protegida, hogar de miles de animales nativos y un terreno prístino que abarca aproximadamente el tamaño de Carolina del Sur. Actualmente, solo un puñado de familias distribuidas en siete cabañas permitidas pueden permanecer en el refugio. En menos de 100 años, todos los permisos restantes llegarán a su vencimiento y no quedará presencia humana.

Mike Brewer and Edd China continue working on getting the second-hand Mercedes 230E back on the road.

Mike and Ant drag a rare 1972 Datsun 510 2-door into the 21st century. The engine is in good order and the car itself could be quite valuable, but the paint job is awful, the gearbox is unresponsive and the bodywork leaves a lot to be desired.

Richard and Aaron take on the ultimate 4x4 hot rod: a \'76 Bronco. Unfortunately, runaway rust issues make this project budget-buster. Needing cash fast, Richard hits the road in search of some quick flips, including a Pontiac Chieftain and \'40 sedan.

With the Bronco over-budget and past deadline, Richard\'s patience (and wallet) are severely tested. He sells a \'36 Ford three-window then considers a dare to sell his beloved Shelby Mustang. Sue is not amused with Gas Monkey\'s birthday gift to her.

A look at how George Washington\'s favourite tipple is made, how aircraft seats are tested without crashing a plane, and the manufacturing processes behind billions of batteries

A look at how nickel is mined, how the lock gates for canals are built so that barges and boats can climb hills, and the processes involved in creating Taiwan\'s beloved bubble tea