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Fish stocks are plummeting and within our lifetime, the oceans could be empty. Explore the effect of the world's insatiable appetite for seafood is having on the ocean's marine life.
In the US, 40 percent of food is wasted. Nelufar Hedayat meets people fighting the war on waste, including TV star Nicole Richie. From Guatemala to America she reveals how our obsession with the way food looks leads to an astonishing amount of waste.
Nelufar Hedayat investigates the truth behind the dairy industry. From Ontario to California, Wisconsin and DC, she meets farmers, politicians and activists, including the musician Moby, to find out the true cost of the milk we drink every day.