Brown hyena expert Ingrid Wiesel wants to find her favourite study animal, named Tosca, who has disappeared from her home range on Namibia’s wild west coast. Ingrid's spent the last 17 years studying brown hyenas - now she must journey deep into Tosca's world to discover what exactly has forced her to leave her traditional hunting grounds.

Chronicles over four centuries of African American influence on the development of the modern-day United States. Before Plymouth Rock and Jamestown, St. Augustine, FL had built a multicultural colony of free and enslaved men and women. This small colony would eventually set the stage for the first Underground Railroad in the late 1600s. Then, 300 years later, be the epicenter of events that would lead to the passage of the Civil Rights Act of 1964.

National Geographic documentary on Martin Luther King Jr. helps drive change in the United States in the face of bitter opposition, not least from opponents within the U.S. government; King is subjected to a fierce campaign of intimidation by J. Edgar Hoover's FBI.

Down to the Earth’s Core takes viewers from the sidewalk to the centre of the planet in one epic unbroken shot. Using spectacular computer generated imagery; the camera smashes through almost 9 000 kilometres of solid rock to explore the hidden world beneath our feet. Experience an earthquake inside the San Andreas Fault, blast out of a volcano, encounter bizarre cave-dwelling creatures and enter caves full of giant crystals – all inside planet Earth. As the camera lowers into Earth's bosom, the planet’s extraordinary story, is laid bare layer by layer, showing how prehistoric forests became modern-day fuel, witnessing the dinosaur’s cataclysmic death, and watching as stalactites form and gold grows before our eyes. Deeper, beyond the reach of any mine, any drill, we find wonders beyond imagination: towering molten metal tornadoes, forests of solid iron crystals, until we reach the strangest, least understood place on the planet – the core.

Follow the close analysis of an ancient fight master's manuscript depicting combat techniques and devices used over 500 years ago.

Oceanographers have been gripped by a new spirit of discovery and have undertaken the biggest population census of ocean species ever conducted - a "Census of Marine Life". The quest: to find out when and where it all began. Where did the water come from? How was life created in the oceans? And how did it evolve to the enormous diversity we see today? Join National Geographic as we travel more than 4 billion years into the past to uncover how oceans and marine life came to exist.

1692, Salem, Massachusetts; 162 people are arrested on charges of witchcraft. Five die in jail, one is crushed to death and 19 die on the gallows. The Salem witch trials have long been regarded as the textbook example of what happens when people are overwhelmed by hysteria. Now, author and historian, Katherine Howe, returns to the site of her ancestor's execution to discover how the very latest research has unearthed a chilling possibility that the most famous witch trial in the English speaking world was actually the result of a cynical plot by Salem's embattled Puritan Minister: Samuel Parris.