Around the world, obesity levels are rising. More people are now overweight than undernourished. Two thirds of British adults are overweight and one in four of us is classified as obese.

Jacques Peretti investigates how the concept of 'supersizing' changed our eating habits forever. How did we - once a nation of moderate eaters - start to want more?

Jacques Peretti examines assumptions about what is and is not healthy. He also looks at how product marketing can seduce consumers into buying supposed 'healthy foods' such as muesli and juices, both of which can be high in sugar.

In the United States, child poverty has reached record levels, with over 16 million children now affected. Food banks are facing unprecedented demand, and homeless shelters now have long waiting lists, as families who have known a much better life sometimes have to leave their homes with just a few days notice. This World asks three children whose families are struggling to get by to explain what life in modern America really looks like through their eyes.

The film hints at the global consequences of CCD continuing unchecked: the possibility that the crops, fruit and flowers that humanity rely will not be pollinated and will die out.

Haiti hit the headlines last year when it was hit by yet another hurricane. Unreported World returns to the island to find that it's still in a state of emergency.

Unreported World highlights the tragic plight of Nepal's child widows, some of whom are as young as thirteen. Many face abuse and servitude for the rest of their lives, ostracised by their families and communities, and often forced to sell their bodies to provide food and shelter for themselves and their children.

75 per cent of Mali's population are farmers, but rich land-hungry nations like China and Saudi Arabia are leasing Mali's land in order to turn large areas into agri-business farms. Many Malian peasants do not welcome these efforts, seeing them as yet another manifestation of imperialism.