There are several dozen parks located within the desert southwest area of the US in Texas, New Mexico and Arizona. They protect everything from historically significant rivers, urban memorial parks, battlefields, flint quarries, scenic lakes and mountains, wildlife, caverns, ancient cliff dwellings and cactus. This program features several dedicated National Park rangers, responsible for protecting our national parks and the history, natural resources,...

Professor Trujillo demonstrates the property of Heat Capacity and the different abilities of water and air to absorb heat.

“Land of the Eagle” turns the clock back to reveal the continent as it used to be hundreds of years ago, seen through the eyes of Native Americans and white settlers. Through their writings and diaries, Peter Crawford's award-winning series recreates the landscapes and wildlife of North America at the time when the first Europeans came to this 'new world’. This film explores the Sonora Desert of Arizona, where plants and animals have adapted...

Explorers Hannah, Oliver and Reiann visit Nina in her workshop and discover that light from the sun only shines on one side of the moon.

Emily Graslie embarks on a journey through billions of years of Earth’s history. Along the way, she meets some of the planet’s earliest lifeforms – from primitive bacteria to giant reptiles, and many surprising creatures in between.

In this episode, we discover what happened next when a second wave arrived, and the tsunami reached Sri Lanka. We uncover how animals were able to detect the disaster heading their way, and reveal that more than 250 years ago, Britain experienced its own tsunami.

This program explores the seven recognized continents on our planet. It introduces the viewer to the topography of each region as well as the mega cities found across the globe. The continents are explored in order of size from largest to smallest.

We all know that mankind can't live without air, food, and water...the same is true of salt. The salt on your table is a key to unlocking the story of our planet and the cosmos. Big History reveals how this simple molecule underpins our civilization.

Water covers most of our Earth’s surface area. In this program, we’ll discuss the characteristics of the sea and its impact on climates and coast lines. Topics include: Marine Plants, Sea Water Characteristics, Ocean Currents, Sea Water Temperature, Wave and Tide Formation, Tsunamis, The Sea Bed, and Underwater Gas and Petroleum Deposits.

Beluga whales share their northern kingdom in Greenland with a mysterious cousin: the narwhal. Both species begin a thrilling adventure through a maze of sea ice to their ancestral summering grounds in the Canadian Arctic. Even though they follow ancient migration routes, trouble lurks around every corner. From freezing environments to fierce predators, only their shared knowledge and power of family can get them through safely.