Popcorn has long been linked with the cinema, or more recently, the microwave, but while many of us may have questioned why popcorn pops, few of us have inquired where popcorn comes from. Thousands of years ago, the ancient peoples of the Americas cultivated the variety of maize that produces popcorn. Popcorn relics going back 6.700 years have been unearthed in Peru. So, the next time you grab a handful of your favourite food, remember to thank someone other than Orville Redenbacher.