When did Impossible Engineering Season 3 Episode 4 air?
Impossible Engineering Season 3 Episode 4 aired on April 20, 2017.


Behind every seemingly impossible marvel of modern engineering is a cast of historic trailblazers who designed new building techniques, took risks on untested materials and revolutionised their field. Each episode details how giant structures, record-beating buildings, war ships and spacecraft are built and work. As the show revels in these modern day creations, it also leaps back in time to recount the stories of the exceptional engineers whose technological advances made it all possible.

Go inside a state-of-the-art research base located in Antarctica, the coldest continent on Earth. Halley VI is built atop giant skis on a floating ice shelf, and this innovative design helps scientists brave the dangers of this extreme environment.
Direct answers for episode-level questions and details.
Impossible Engineering Season 3 Episode 4 aired on April 20, 2017.
This episode runs for approximately 42 minutes.
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