Earth was able to retain an atmosphere because of its gravity. It is <span>the same force that keeps us anchored to Earth. Molecules in our atmosphere are constantly moving, spurred on by energizing sunlight. If Earth were much less massive, gravity's grip would be weaker.</span>
The Red Power Movement, also known as the American Indian Movement<span> (AIM), was dedicated to getting the Federal Government of the United States to return land that was previously owned by the Native Americans. In 1969 Native Americans tried to regain Alcatraz Island which was once a part of their native territory.</span>
