Meriwether Lewis and William Clark first described it as grisley, which could be interpreted as either "grizzly" (i.e., "grizzled"—that is, with golden and grey tips of the hair) or "grisly" ("fear-inspiring", now usually "gruesome"). The modern spelling supposes the former meaning; even so, naturalist George Ord formally classified it in 1815 as U. horribilis, not for its hair, but for its character.
The bald eagle (Haliaeetus leucocephalus) is a bird of prey found in North America.
Its range includes most of Alaska, Canada, the United States, and northern Mexico.
The bald eagle builds the largest nest of any North American bird and the largest tree nests ever recorded for any animal species, up to 8.2 ft wide.
A symbol of strength and freedom, the bald eagle was chosen in 1782 as the National Emblem and is pictured on the Great Seal of the United States.
The bald eagle earned its name from the Old English word "balde," meaning white, referring to the distinctive white feathers covering its head and tail.
Yellowstone National Park is a nearly 3,500-sq.-mile wilderness recreation area atop a volcanic hot spot.
Mostly in Wyoming, the park spreads into parts of Montana and Idaho too.
Yellowstone features dramatic canyons, alpine rivers, lush forests, hot springs and gushing geysers, including its most famous, Old Faithful. It's also home to hundreds of animal species, including bears, wolves, bison, elk and antelope.
Alaska, northwest of Canada, is the largest and most sparsely populated U.S. state.
It's known for its diverse terrain of open spaces, mountains and forests, with abundant wildlife and many small towns.
It’s a destination for outdoor activities like skiing, mountain biking and kayaking. Massive Denali National Park is home to Denali (formerly called Mount McKinley), North America’s highest peak.
The United States purchased Alaska from the Russian Empire on March 30, 1867, for 7.2 million U.S. dollars at approximately two cents per acre.
The area went through several administrative changes before becoming organized as a territory on May 11, 1912. It was admitted as the 49th state of the U.S. on January 3, 1959.