A powerful colossus is controlling most of what we eat. Who has the guts to take it on? Emily Thomas meets three people who have gone up against the food industry. From following trucks across Thailand to expose slavery in the fishing industry, to going undercover in Europe to reveal the hidden ingredients in processed food, to finding their phones have been infiltrated by spyware, these are people prepared to take risks. They talk about what it feels like to have such a powerful opponent, why they’re prepared to go to such lengths, and how the consumer needs to be vigilant. Our guests are Joanna Blythman, journalist and author, Alejandro Calvillo, director of El Poder del Consumidor, a consumer rights organisation in Mexico, and Margie Mason, investigative reporter for The Associated Press. (Photo: Man carved out of orange peel. Credit: Getty Images)