NOVA: Frozen Frogs

In this video adapted from NOVA scienceNOW, learn how the common wood frog survives the cold winter. Wood frogs are found in the northern United States and Canada and must endure freezing cold temperatures for parts of the year. In order to survive the cold, they have a special adaptation—they are able to freeze solid without damaging their cells. Sugar acts like a natural antifreeze in their bodies, allowing them to spend the winter frozen and then resume function in the spring. CREDITS: LICENSE:

LicenseCustom License

More videos by this producer

Black Hole Apocalypse | How to Detect Gravitational Waves

Learn about gravitational waves and how they can be detected in this video from NOVA: Black Hole Apocalypse. Use this resource to visualize abstract concepts related to waves and wave interactions and to provide opportunities for students to develop and use models and to communicate explanations wit

Black Hole Apocalypse | Gravity and Spacetime

Learn how gravity can be described as the curving of spacetime, according to Einstein’s general theory of relativity, in this video from NOVA: Black Hole Apocalypse. Computer animations illustrate the concept of warped spacetime and how objects “fall” along a curved path. Use this resource to visual

NOVA scienceNOW: T. Rex Blood?

In this video segment adapted from NOVA scienceNOW, learn how scientists are hoping to better understand the biology of dinosaurs by studying the insides of fossil bones. Hear about the accidental discovery of dinosaur soft tissue by paleontologist Dr. Mary Schweitzer, and how this tissue enables sc