Watch: A locust swarm can be as large as 460 square miles (1,191 sq. km)—just large enough to make you want to stay indoors. | National Geographic

Locust Plague Devours 40,000 Tonnes of Vegetation When crops are plentiful, locusts have a unique hunting technique: they create a plague-like swarm up to a kilometre long, destroying all the vegetation in their path. #EarthsTropicalIslands | BBC Earth