Season 4 Episodes6
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Ranked #3 of 6 in Season 4•matches the season avg
Secrets behind nuclear submarines; crash-test dummies; growing fruits and vegetables.
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"Nuclear Sub, Crash Test Dummies, Fruit and Vegetables" is episode 3 of How Do They Do It? season 4. It scored 7.2/10 from 14 votes, ranking #3 of 6 episodes this season (season average 7.2). It aired on April 18, 2007.