48:52
The Great Deep Freeze: Ice Age Giants
Step back in time by just 20,000 years and the world is a very different place. The Great Deep Freeze means that vast swathes of the northern hemisphere are covered by ice sheets, glaciers carve great valleys through the landscape, and continents me...
50:36
Living together: relationships in the wild
This program seeks to understand how relationships between living things have promoted the diversity and splendor of life as it exists on Earth today. Predation, competition, and symbiosis are addressed through topics such as the anatomical arms rac...