BERLIN, GERMANY – JANUARY 19: Citrus fruits including limes, oranges, grapefruit and lemons lie on display at the 2018 International Green Week (Internationale Gruene Woche) agricultural trade fair on January 19, 2018 in Berlin, Germany. Food for humans made from insects and worms is a growing trend. The International Green Week is among the world’s biggest agricultural trade fairs and brings together agriculture, food, nutrition and horticulture. It is open to the public from Janaury 19-28. (Photo by Sean Gallup/Getty Images)