Earth has got swirl. The air in the atmosphere swirls. The water in the ocean swirls. But what does it all have to do with weather and climate? To answer this, we’ll have to get a close-up on all that swirl. Don’t worry, being dizzy is fun! Topics include: Earth's Place in the Universe; Investigating Earth's Past; Restless Earth; Mountains, Volcanoes, and Earthquakes; Energetic Earth; Atmosphere and Oceans; and Earth Systems.

The Sumatra-Andaman earthquake of 2004 is estimated to have released the energy of 23,000 atomic bombs, inundating coastal communities with tsunami waves up to 100 feet high. This program explains the undersea geologic forces that create tsunamis - and considers the possible consequences if a landslide-generated mega-tsunami were to strike the East Coast.

This program traces the water cycle, beginning with the collection of rainwater in rivers and lakes, in great detail through a water treatment plant, to some of the places where water is used, and finally back into the atmosphere. Treatment of the water begins with the use of chlorine to destroy organisms; the water is then filtered through various sedimentation tanks to remove solid matter. Other treatments employ ozone, which oxidizes everything...

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.

This live-action video program is about the pseudo-ruminant digestive system. The program is designed to reinforce and support a student's comprehension and retention of the term through use of video footage, photographs, diagrams and colorful, animated graphics and labels. Viewers will see and hear the word used in a variety of contexts providing students with a model for how to appropriately use the word. Related words are also used and reinforced...

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.

This live-action program teaches students that, for food to be of use to our body's cells, it needs to be broken down and absorbed into the blood stream. This is the job of the digestive system, a complex series of tools that includes teeth, saliva, bile, acids and enzymes designed to reduce nutrients to a form that can be delivered to cells. Students will come to understand that waste products and indigestible materials must be removed from the body....

X-Ray Earth reveals a vast fault 80 miles off the Pacific Northwest coast. For more than 300 years, pressure has been silently building. When it slips, it will generate a megaquake and a tsunami that will devastate the region, threatening the lives of 15 million residents. Now scientists are racing to understand how bad the destruction will be when the “big one” hits.

Dallas Campbell strips away the surface to reveal a hidden Britain as you've never encountered it before.

Who were the apes that took the first faltering steps towards being human? At a remote place called Taung on the edge of the Kalahari Desert was found the skull of a three-year-old child who had died millions of years ago. Known as Taung Child, this infant was a member of a long-vanished species who could walk upright – they straddled the boundary between ape and man. But they were tiny and weak. How did they survive? This episode reconstructs how...