We westerners are curiously fussy eaters. We'll happily consume the pulped nether regions of factory-farmed pigs if they're labelled as sausages, while some of us positively salivate at the idea of grotesquely enlarged goose liver. But when we see someone munching on a free-range cricket, we gag. Or, in some cases, laugh. There is something about eating locusts, ants, flies and wasps that seems utterly bizarre to us. Yet the United Nations calculates that there are 1,700 edible insect species, which provide vital protein to large swathes of the human population in South America, Africa and Asia.
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