English

This colorful video uses graphic sequences to illustrate the journey of a pizza slice as it travels through the human body. Each major organ of the digestive and excretory systems is profiled and shown in action. In addition, the program explains how the body uses fats, carbohydrates, proteins and other nutrients.

In this informative program, students explore two key body systems: the respiratory and circulatory systems. Beginning with the respiratory system, the complex process of breathing is explored.

From sipping hot chocolate to remembering a phone number, this creative video shows how everyday situations are controlled by the brain and nervous system. Various organs and components of both the central nervous system and the peripheral nervous system are explored.

This program explores the characteristics and functions of the bones and joints in the human skeletal system. How the muscles, tendons, and ligaments work in conjunction with the skeletal system to provide movement for the body is shown through the use of live action demonstrations and animated sequences.

A huge bottled-water industry has recently emerged, with the U.S. its largest consumer. But is bottled water actually healthier, safer, or tastier than tap water? A water expert explains that bottled water does not meet the same strict standards in the U.S. as water from the tap, though tap-water quality can vary among communities.

Despite its wonders, Earth's water cycle does not spread water evenly around the planet. The Ogallala Aquifer’s huge underground reservoir of water gives the relatively dry Central Plains states such as Nebraska a large but limited irrigation source. But the aquifer's water is being used up faster than it is beng replenished.

The Rio Grande is one of our longest rivers, its Texas section forming the border between the U.S and Mexico. Competing human claims for it are viewed through the eyes of two young women: a whitewater rafting guide in upstream New Mexico and a teenager downstream near El Paso.

Drinking polluted water can cause many deadly diseases, especially in children of poor countries around the world. We see the crystal-clear water in a flowing Peruvian rainforest river but are amazed to learn that it is unsafe, due to runoff entering the great connected network of tributaries that flow into the Amazon, the world’s largest source of fresh water.

Polluted waters can have damaging economic and social effects as well as destroy wildlife habitats. Chesapeake Bay is one of the most polluted bodies of water in America, but local students are working with commercial crab catchers and scientists in the Baltimore area to help restore its health.

The fair distribution of water has long been a worldwide problem, and it is one that the United States may increasingly experience in the future. The Great Lakes contain 20% of the world’s fresh surface water, but that water is currently available to only a small portion of the U.S population.