John Ray is in Malawi where physical assaults against people with albinism have increased rapidly in recent years, and he meets those who have survived some of the most savage attacks. Dan Rivers travels to the lowest point on Earth, the Dead Sea, which is rapidly shrinking, causing sinkholes and disastrous effects for the area's tourism and natural environment. Juliet Bremner visits the former Soviet republic of Armenia, a small country with a big claim to fame - it dominates the world at chess.