They call it the American Alps, and after spending a few days exploring it, I get why. North Cascades National Park is one of the most beautiful and least visited parks in the country. Jagged peaks ...

Nearly 20 years ago, the last known Cascades frog disappeared from Lassen Volcanic National Park. Now researchers are bringing them back, hoping the frogs can stage a comeback.

They're known as the American Alps, and it doesn't take long in Washington's North Cascades to figure out why. Rows of jagged mountains cut across an impossibly vast horizon while aquamarine rivers ...