Unsolved Mysteries

6th May 2017 43 mins Season 1 Episode 8

The past does not give up its secrets easily. Brand-new machines are helping explorers reveal mysteries once thought lost forever. Underwater archaeologists are searching for a World War II Nazi sub that disappeared in U.S waters. In Scotland, researchers are digging up an ancient rock, covered with cryptic markings, that could reveal more about who built Stonehenge. On this episode: German Submarine U-576; Cochno Stone; LIDAR.

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Season 1 · Episode 9

Biggest Engineering Breakthroughs

A revolution in engineering is making today's technology as outdated as the horse and buggy. On this episode: world's fastest production motorcycle - Lightning LS-218; a "train" faster than the speed of sound - Hyperloop; the world's first nuclear fusion power plant - ITER.

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