This series of videos takes students on a fascinating journey, following food as it travels through the digestive system. Clear animations illustrate the functions of the major digestive and excretory structures. Concepts and terminology...

Are we about to run out of chocolate, wine or even sperm? Humanity is certainly going through its resources at an alarming rate, so what important items are on the brink of extinction?

Meet the Kidneys - those fist-sized organs that are shaped like beans. They are kind and hardworking organs located in your upper abdominal area, attached to the back of the abdominal cavity on either side of the vertebral column. Your...

Learn the basics about calculating molarity as part of the chemical calculations topic.

In this lecture you see case studies about how companies use sustainable operations when interacting with potential employees, and where to look for potential opportunities to reduce wastes in products and services. Examples of companies...

Cradle-to-cradle design is a way to reduce product cost and waste, reusing the material over and over and turning waste streams into product streams, a foundation of sustainable operations.

Just how dark were the Dark Ages? How did the Black Plague kill up to 100 million people and change the face of the Earth?

The Urinary, or Excretory System is another system by which the body rids itself of unwanted Toxins or (waste). Basically, the urinary system’s main purpose is to maintain the body’s “homeostasis”. In other words, the urinary...

So the digestive system gets rid of waste from the food you eat through defecation. But lots of waste will also build up in the bloodstream as a byproduct of metabolism and other processes. What does the body do with this? It will...

An introduction to Subculture, Counterculture, Dominant Ideology, and Culture War.

In this video, we are going to look at a food chain and the different roles within that. So we will discover exactly what each of these words mean: food web, food chain, trophic level, producer, consumer, herbivore, carnivore, omnivore,...

Practical examples show how viruses and bacteria are both beneficial and harmful to humans. Animations describe the structure of a virus, and explain how they reproduce and cause disease. Microscopic images illustrate different types and...

University of Colorado engineer Abby Watrous is on a mission in rural China, converting coal-burning homes and cook stoves into cleaner-burning models, using, among other things, the extremely abundant supply of pig poop. With funding...

In this live-action program viewers will learn that the kidneys are a pair of bean-shaped organs that perform several vital functions. The kidneys filter blood, form and excrete urine, regulate body fluid and electrolyte balance, and act...