Which packaging innovation was invented by Norwegian engineer Erik Wallenberg in 1951 and revolutionized the beverage industry by dramatically reducing transportation costs and environmental impact?

Packaging innovation isn't just about protecting products—it's often about reinventing how consumers interact with them entirely. Some packaging breakthroughs have been so significant they've transformed industries, saved countless resources, or created entirely new product categories. This trivia tests your knowledge of a groundbreaking packaging innovation that revolutionized beverage consumption and sustainability efforts worldwide.

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Tetra Pak carton (aseptic packaging that allows milk and juices to be stored without refrigeration)
Ring-pull can tab (the first easy-open beverage can that eliminated the need for separate can openers)
PET bottle (the first lightweight plastic bottle that could safely contain carbonated beverages)
Bag-in-box packaging (the collapsible bag and spout system that preserves liquids after opening)