Grasshoppers - agricultural pest or sustainable food?

What if we shifted our perspective from seeing some animal species as a problem to seeing them as an abundant and tasty source of food? Over the next few episodes, we’ll hear three "problems" in three regions: grasshoppers as pests in Mexico, invasive crayfish in London and overpopulated white-tailed deer in the United States. With a rising trend for traditional foods, demand for grasshoppers has exploded in Mexico in the last decade--but is it sustainable? We ask sociologist-biologist Elen...