Host Mo Rocca shows us the underwater drone bringing bait to the fish; the inventor of 3D printing; updates on past innovators; and, how railroad signals changed train traffic. |
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Title: | 3D Printing Inventor | |
Air Date: | February 10, 2018 | |
Runtime: | 30 min | |
Harleyroses : Curious how long and what determines when a cam vid goes HD.