Many foods you'll find at the grocery store, like lettuce, for example, are stored in special plastic packaging called MAP that helps them stay fresh longer. Find out what MAP is -- and how it keeps food fresh longer -- in this episode of BrainStuff.
Welcome to the daily audio workout for your head. Every day we have two games for you, each with three rounds which get progressively harder. To enjoy the full experience avoid distractions whilst you listen.
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