The gang learns about dams./A bird drops a little oyster named Elroy on Nature Cat's head. The gang goes looking for their sleepy hammock and meet a family of beavers using trees to build a dam.

Add Yahoo as a preferred source to see more of our stories on Google. We leave you this Oscar Sunday at one of nature's greatest movie sets: an icy Niagara falls. Videographer: Carl Mrozek.

Neuroscientists have shown that experiencing nature can alleviate acute physical pain. Surprisingly, simply watching nature videos was enough to relieve pain. Using functional magnetic resonance ...