Some cultures already eat insects.  Grasshoppers are not uncommon in some Mexican cuisine; crickets are eaten in Thailand.  According to researchers from Wageningen University in the Netherlands, insects are a great source of protein and are much more sustainable than cattle, for example.  The researchers speculate that insects, including crickets and grasshoppers will be ground down and used as ingredients in other products, such as hamburgers.  In fact, the Dutch government has invested 1 million euros into research and is preparing legislation regarding insect farms.