Volcanic activity built Mount Rainier, but it is glaciers that shape it. True glaciers consist of at least three layers: snow, mixed snow and ice, and pure ice. They are formed because the mountain's winter snowfall surpasses its summer snowmelt. Season after season, the snowpack accumulates and its weight ...

Bald eagle (Haliaetus leucocephalus)  Living in coastal woodlands and along waterways, the bald eagle feeds on fish it grabs from the water with its talons, as well as salmon carcasses. Although still a threatened species in the lower 48 states, bald eagle populations are slowly recovering. With the exception of ...