What is a cell?

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

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...

For Millions of years, our planet has been floating in space. Millions of creatures have lived on its surface. Many a quaint being was among them,...

The film is filled with fun facts that show how cats make good pets, yet in other ways are wild and untamable.

An African narrator tells the story of earth history, the birth of the universe and evolution of life. Beautiful imagery makes this movie documentary...

THE BRAIN is an astonishing voyage of discovery into our last biological frontier. Although today s computers can make calculations in one-100th of a...

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...

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

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