Beaver Dams Hold the Key to Our Ecosystem

Beavers are helping to keep the soil wet, which means in dry areas or droughts, the ground is less likely to be affected. Scientists have studied these fires and found that there are what they call 'green zones' Those green zones all have one thing in common: beaver dams. The largest beaver dam can be seen from google earth. It's in the wood buffalo national park in alberta parks, canada.