What is a cell?

From the unique vantage point of 200 miles above Earth's surface, we see how natural forces - volcanoes, earthquakes and hurricanes - affect our...

When Harvard PhD student Jennifer Brea is struck down at 28 by a fever that leaves her bedridden, doctors tell her it’s "all in her head."...

A documentary of insect life in meadows and ponds, using incredible close-ups, slow motion, and time-lapse photography. It includes bees collecting...

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

Travel alongside the astronauts as they deploy and repair the Hubble Space Telescope, soar above Venus and Mars, and find proof of new planets and...

Many geneticists and archaeologists have long surmised that human life began in Africa. Dr. Spencer Wells, one of a group of scientists studying the...

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...

Bacteria, viruses, but also fungi, algae, pollen, and even insects: micro-organisms thrive and circulate constantly in our sky. How can so many...

David Attenborough takes us on a guided tour through the secret world of plants, to see things no unaided eye could witness. Each episode in this...

Earth teems with a staggering variety of animals, including 9,000 kinds of birds, 28,000 types of fish, and more than 350,000 species of beetles....

National Geographic: Incredible Human Machine takes viewers on a two-hour journey through an ordinary, and extraordinary, day-in-the-life of the...

A documentary that explores the natural world of the sea, from the single-celled organism to more complex forms of life, OCEAN ORIGINS was originally...