Harry Marshall

Natural World is a nature documentary television series broadcast annually on BBC Two and regarded by the BBC as its flagship natural history brand. It is currently the longest-running series in its genre on British television, with more than 400 episodes broadcast since its inception in 1983. Natural World is produced by the BBC Natural History Unit in Bristol, but individual programmes can be in-house productions, collaborative productions with other broadcasters or films made and distributed by independent production companies and purchased by the BBC. Natural World programmes are often broadcast as PBS Nature episodes in the USA. Since 2008, most Natural World programmes have been shot and broadcast in high definition.

Jeremy Wade examines and explores some of the planet's largest waterways to understand how exploitation and pollution are contributing to the destruction of rivers that were once the lifeblood of communities.

A strange sphere settles down in a California canyon, causing both the scientific and military communities to gather around to investigate.

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Journey Into Amazonia features the swollen rivers, flooded forests and dense canopy of the vast rain forest recognized as one of the Earths natural wonders. The rivers rich, roiling waters sustain a vast cast of characters, including giant seven-foot-long otters, fruit-harvesting fish, freshwater dolphins and manatee. While on land, stealthy jaguars prowl, acrobatic monkeys defy gravity and keen-eyed harpy eagles soar.

An investigation into the science and mystery behind how animals find their way home, observing pigeons' almost supernatural sense of direction

Breaking and entering, gang fights-it's not the lifestyle you would imagine inside the posh Mount Edgecombe Estate in Durban, South Africa. But for our primate cousins, the vervet monkey, just trying to protect their turf is all in a day's work. This group of mischievous vervet monkeys bring action and drama to every street corner. Over the course of a year, two rival gangs, the Pani Troop and the Sugar Cane Gang, will vie for prime real estate. See who will win.

A scientific search by Mark Evans

This chilling documentary brings together medieval manuscripts, new archaeological finds and a shocking interview with a vampire slayer to cast new light on medieval beliefs in vampires