Aerial America Smithsonian Channel

If you fly over the Great Plains today, giant squares of land immediately stand out. Many of these are the 160-acre plots forged out of the prairie by 19th-century pioneers, a legacy of the Homestead Act of 1862.

The Civil Rights movement was defined by seismic events that all took place in the South: the murder of Emmett Till, Rosa Parks refusing to leave her bus seat, and Martin Luther King, Jr.'s Selma-to-Montgomery march

Cheyenne Bottoms is the nation's largest inland marsh, an area of over 60 square miles. It's also the favored resting spot of many species of migrating birds, from pelicans to 27 species of ducks.

Separated from their mainland cousins for 10,000 years, kodiak bears have become the largest subspecies of brown bear on Earth. Here's what it takes to feed them.

From actor Paul Newman to astronaut Neil Armstrong, Ohio is home to some of the most influential and recognizable people in history.

There's something about New York City that Hollywood can't resist, since the early 1900's the city has served as the setting for thousands of films.