Macadamia Nuts, Tap Water, Crowd Barriers
EpisodeS12E1322 min2015-08-13

How Do They Do It?

Macadamia Nuts, Tap Water, Crowd Barriers

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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