From swiftlet bird nests to electronic waste, we traveled the world to learn about surprising, billion-dollar industries. 0:00 Intro 00:36 Tuna 08:56 Swiftlet nests 19:46 Used watches 32:32 Aloe vera extract 41:35 Electronic waste 50:38 Açaí 1:02:13 Fast-food Advertising 1:11:31 Instant noodles 1:
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