简介：Changes to the bacteria that live inside all of us are responsible for increasing the number of people with allergies, suggests new research. In this episode of Horizon, the show investigates this claim by conducting a unique experiment with two allergic families in order to find out just what it is in the modern world that is to blame. With a raft of mini cameras, GPS units an...
简介：A young girl falls into a river and drowns. When her body is found in a remote village along the river, her uncle arrives to claim her body, only to find that she is very much alive. But when she returns to her family, unexplainable occurrences lead them to believe she is possessed.