Beavers and the dams they build are not always embraced in the areas where they do their work. But there's a growing recognition that they also are building a kind of natural infrastructure that helps ...

Science correspondent Miles O'Brien went to see the beavers at work during their busy season and has the story for our ongoing coverage of Tipping Points. PBS News Hour is available to stream on ...

However, these reestablishment efforts are allowing their population to grow. Why beavers? Well, as PBS noted, beavers are ...