With the advent of the automatic ringer, parishioners were summoned to mass at the proper times.
(02:59)During the Civil War, Confederates mined for saltpeter, a key ingredient in gunpowder.
(03:00)Automata, mechanical toys driven by clockwork, were the predecessors to modern robots.
(02:36)Are spacecraft monitoring a volcano in Mexico city?
(01:08)Ryder, Ben, and James test out the theory that a possible sighting in Mexico was merely oil rigs from a distance.
(03:50)Is an extraterrestrial responsible for a rash of mysterious cattle deaths?
(02:23)Look down on Earth as a hurricane begins to develop in the Gulf Coast.
(03:07)If a powerful mutated virus hit the general population, humans would be in serious trouble.
(02:16)Continuing experimentation with nuclear bombs could be the solution to traveling at the speed of light.
(03:02)Things get scary as a scientist rappels down a Siberian permafrost cliff to collect samples.
(16:24:00)Memory maps are this man’s secret to memorizing long series of numbers.
(03:04)British scientists Richard Ambrose and Jonny Phillips return with a new series of this fun-but-informative show that explains t...
(00:50)The evolution of the machine gun from its use in WWI to the GAU-8 Avenger, one of the deadliest machine guns in the world.
(00:34)Experts and modern seers examine the work of Nostradamus to see whether the future really can be predicted.
(01:17)Climate experts examine what effect each rise of 1ºC could have on the world.
(03:22)The jet engine led to revolutionary changes in aerial combat but huge risks were taken by designers, pilots and air crews in or...
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Half the world's population lives in striking distance of a major fault line. Ultimate Disaster examines key earthquakes of our...
(00:55)Discover the science behind these natural phenomena, and experience the effect an F5 tornado would have on a major city.
(00:55)Scientists and citizens across the world are scrambling to solve a set of disturbing mysteries unfolding along the shores of ri...
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