Should we eat bugs? - Emma Bryce

3,114,003 views ・ 2014-01-02

TED-Ed


Please double-click on the English subtitles below to play the video.

00:06
[Why don't we eat bugs?]
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For centuries, people have consumed bugs,
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everything from beetles
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to caterpillars, locusts,
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grasshoppers, termites, and dragonflies.
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The practice even has a name:
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entomophagy.
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Early hunter-gatherers probably learned from animals
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that foraged for protein-rich insects and followed suit.
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As we evolved and bugs became part of our dietary tradition,
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they fulfilled the role of both staple food and delicacy.
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In ancient Greece, cicadas were considered luxury snacks.
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And even the Romans found beetle larvae to be scrumptious.
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Why have we lost our taste for bugs?
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The reason for our rejection is historical,
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and the story probably begins
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around 10,000 BC in the Fertile Crescent,
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a place in the Middle East
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that was a major birthplace of agriculture.
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Back then, our once-nomadic ancestors began to settle in the Crescent.
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And as they learned to farm crops and domesticate animals there,
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attitudes changed,
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rippling outwards towards Europe and the rest of the Western world.
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As farming took off,
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people might have spurned bugs as mere pests
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that destroyed their crops.
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Populations grew, and the West became urbanized,
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weakening connections with our foraging past.
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People simply forgot their bug-rich history.
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Today, for people not accustomed to entomophagy,
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bugs are just an irritant.
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They sting and bite and infest our food.
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We feel an "ick factor" associated with them
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and are disgusted by the prospect of cooking insects.
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Almost 2,000 insect species are turned into food,
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forming a big part of everyday diets
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for two billion people around the world.
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Countries in the tropics are the keenest consumers,
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because culturally, it's acceptable.
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Species in those regions are also large, diverse,
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and tend to congregate in groups or swarms
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that make them easy to harvest.
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Take Cambodia in Southeast Asia
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where huge tarantulas are gathered,
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fried, and sold in the marketplace.
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In southern Africa,
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the juicy mopane worm is a dietary staple,
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simmered in a spicy sauce
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or eaten dried and salted.
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And in Mexico, chopped jumiles are toasted with garlic, lemon, and salt.
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Bugs can be eaten whole to make up a meal
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or ground into flour, powder, and paste to add to food.
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But it's not all about taste.
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They're also healthy.
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In fact, scientists say entomophagy could be a cost-effective solution
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for developing countries that are food insecure.
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Insects can contain up to 80% protein,
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the body's vital building blocks,
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and are also high in energy-rich fat,
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fiber, and micronutrients like vitamins and minerals.
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Did you know that most edible insects contain the same amount
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or even more mineral iron than beef,
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making them a huge, untapped resource when you consider that iron deficiency
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is currently the most common nutritional problem in the world?
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The mealworm is another nutritious example.
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The yellow beetle larvae are native to America and easy to farm.
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They have a high vitamin content,
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loads of healthy minerals,
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and can contain up to 50% protein,
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almost as much as in an equivalent amount of beef.
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To cook, simply sauté in butter and salt
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or roast and drizzle with chocolate for a crunchy snack.
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What you have to overcome in "ick factor,"
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you gain in nutrition and taste.
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Indeed, bugs can be delicious.
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Mealworms taste like roasted nuts.
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Locusts are similar to shrimp.
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Crickets, some people say, have an aroma of popcorn.
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Farming insects for food also has less environmental impact
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than livestock farms do
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because insects emit far less greenhouse gas
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and use up less space, water, and food.
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Socioeconomically, bug production
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could uplift people in developing countries
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since insect farms can be small scale,
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highly productive, and yet relatively inexpensive to keep.
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Insects can also be turned into more sustainable food for livestock
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and can be reared on organic waste,
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like vegetable peelings,
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that might otherwise just end up rotting in landfills.
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Feeling hungry yet?
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Faced with a plate of fried crickets, most people today would still recoil,
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imagining all those legs and feelers getting stuck between their teeth.
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But think of a lobster.
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It's pretty much just a giant insect with legs and feelers galore
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that was once regarded as an inferior, repulsive food.
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Now, lobster is a delicacy.
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Can the same paradigm shift happen for bugs?
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So, give it a try!
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Pop that insect into your mouth,
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and savor the crunch.
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