How Dense Are You?

Scholars independently explore several websites to calculate their ecological footprint. Using their new found knowledge, they answer six short-answer questions and take part in a grand conversation with their peers about how our...

Geologists are gneiss, tuff, and a little bit wacke. The fifth chapter of seven includes ten activities at four different levels. The hands-on activities cover fossils including how they are formed, vertebrates, invertebrates,...

Are vaccines protection from infection — or are they risky business? Learners weigh the pros and cons in a short, animated video. The narrator discusses the many illnesses eradicated through world-wide use of vaccines and sheds light on...

The American Kennel Club currently recognizes 167 dog breeds while the Federation Cynologique Internationale recognizes 340. The video explains the three main categories of dogs and how closely those dogs are related. It offers...

Did you know that when you are sitting in your easy chair, you may be moving up to 1000 miles per hour depending on what part of the planet you are sitting on? Consider relative speed by watching this moving video. Boggle brains in your...

There are so many galaxies in the universe that the vast majority of them are too distant for the human eye to perceive. An astronomy video discusses the Hubble Telescope's Deep Field image from 1995 and the eXtreme Deep Field image...

With the thousands of tasks our brain consciously performs on a daily basis, it's amazing that breathing isn't one of them. Learn how human bodies are able to automatically control the exchange of gas that keeps us alive with this short...

When is a person no longer living? This question has been puzzled over for millennia, but is there a clear answer? Watch as this video examines the biological line separating life and death.

Dolphins are one of the smartest creatures on Earth. The size of their brain compared to their body size is second to humans. This allows these cetaceans to form complex social relationships and use echolocation to navigate and...

Ever wonder why it takes awhile to feel full when you eat a meal or snack? Follow food in its fantastic, 40-hour journey through your body with a video about the digestive system! Young anatomists explore the process of digestion,...