Globally, at least 2 billion people eat insects and more than 1,900 species have been used for food, according to the FAO, which said entomophagy would play a key role in food security and environmental protection. Insects need less land and water than cattle. Kim Jong-hee, who has been raising insects since 2000 for animal feed, began farming mealworms and crickets for people in 2013. In the past, people used to shake their heads when they thought of bugs, but now more people believe insects are edible, he said. Reuters