Season 12 Episodes20
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Ranked #15 of 20 in Season 12•−0.1 vs season avg
South Africa's macadamia farmers; Chicago's water-filtration system. Also: the use of Mojo Barriers to keep music fans safe at the Pinkpop Festival in the Netherlands.
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"Macadamia Nuts, Tap Water, Crowd Barriers" is episode 13 of How Do They Do It? season 12. It scored 7.0/10 from 14 votes, ranking #15 of 20 episodes this season (season average 7.1). It aired on August 13, 2015.