How can scientists study a faraway black hole that emits no light? By observing its quasar. As objects get pulled onto the accretion disk orbiting...

In the heart of the Ariege Pyrenees, Patrick Chêne, a farmer and osteopath, cares for humans and animals with his hands and diphonic song. The...

A documentary on Al Gore's campaign to make the issue of global warming a recognized problem worldwide.

What strange forces saved one isolated section along the Upper Mississippi River from the repeated crushing and scouring effects of glaciers during...

Werner Herzog's documentary film about the "Grizzly Man" Timothy Treadwell and what the thirteen summers in a National Park in Alaska were like in...

In The Womb is a 2005 National Geographic Channel documentary that focus on studying and showing the development of the embryo in the uterus. The...

From Raymond Baxter live on Tomorrow's World testing a new-fangled bulletproof vest on a nervous inventor to Doctor Who's contemporary spin on the...

Scientist Mark Plotkin races against time to save the ancient healing knowledge of Indian tribes from extinction.

Richard Feynman was a scientific genius with - in his words - a "limited intelligence". This dichotomy is just one of the characteristics that made...

Of the Seven Wonders of the Ancient World, the Pyramid is the only one to survive. Many believe that even with our 21st-century technology, we...

Concern over global climate change may be at an all-time high, but climate change is nothing new - the earth's climate always followed natural...

The story of the Monarch butterfly: a symbol of American pride and the embodiment of the returning dead in Mexico. It would be a happy story, only,...

Kate Humble and Helen Czerski reveal the inner workings of the sun and investigate why scientists think changes in the sun's behaviour may have...

Dr Helen Czerski delves into the Horizon archive to chart the transformation of a little-known theory into one of the greatest scientific...

Darwin's great insight – that life has evolved over millions of years by natural selection – has been the cornerstone of all David Attenborough’s...

Documentary footage from various sources, set to music. Showing the whole of human life, from birth to death and beyond.

William Shatner presents a light-hearted look at how the "Star Trek" TV series have influenced and inspired today's technologies, including: cell...

Exploring the impact of human behavior on our environment from the perspective of one of South Florida's most beloved and fragile underwater...

The Dream Is Alive takes you into space alongside the astronauts on the space shuttle. Share with them the delights of zero gravity while working...