Killer Bees and Magic Trees

Austrian scientist Gerald Kastberger studies the aggressive giant honeybees of Assam, in particular their unexplained annual migration from the Himalayan foothills to specific trees scattered across the plains a hundred miles to the south - a distance which takes the bees three weeks to cover. Feared locally as much as the tiger, the bees attack en masse, and a hundred or more stings can kill.

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S19E13 - Hippo Beach