In a remarkable example of natural engineering, beavers constructed a dam that filtered polluted water flowing into a protected area—achieving what local authorities had spent seven years planning but had not yet implemented. The animals unknowingly completed the project for free. The beaver dam slowed water flow, trapped sediment, and prevented contaminated runoff from spreading downstream. When officials inspected the site, they realized the dam accomplished the same environmental goals as a p

Sunday night beaver action! This video combines a whole bunch of clips that I filmed last night while following beavers in the river. It shows off lots of various beaver behavior. I hope you enjoy this glimpse into my evening of Beaver watching. | Mike’s photos and videos of beavers

754K views · 2.7K shares | Watch: Using its body and two front teeth, the beaver plays a crucial role in shaping the forest. | National Geographic | Facebook