The fourth estate.

Two men played a crucial role in the creation and early history of the National Park Service: Stephen T. Mather, a public relations genius of sweeping vision, and Horace M. Albright, an able lawyer and administrator who helped transform that vision into reality. In Creating the National Park Service, Albright and his daughter, Marian Albright Schenck, reveal the previously untold story of the critical "missing years" in the history of the service. During this period, 1917 and 1918, Mather's problems with manic depression were kept hidden from public view, and Albright, his able and devoted assistant, served as acting director and assumed Mather's responsibilities. Albright played a decisive part in the passage of the National Park Service Organic Act of 1916; the formulation of principles and policies for management of the parks; the defense of the parks against exploitation by ranchers, lumber companies, and mining interests during World War I; and other issues crucial to the future of the fledgling park system. This authoritative behind-the-scenes history sheds light on the early days of the most popular of all federal agencies while painting a vivid picture of American life in the early twentieth century.

Surveys the online social habits of American teens and analyzes the role technology and social media plays in their lives, examining common misconceptions about such topics as identity, privacy, danger, and bullying.

Growth on the flatlands along the western extents of Imperial Highway in the 1920s was once measured in beans, barley, and jackrabbits. After 2000, the site that became Los Angeles International Airport would be measured by the more than 60 million passengers and nearly two million tons of cargo passing through it each year. One of the world's busiest airports grew out of Mines Field and expanded quickly in the 1930s with the exploits of Charles Lindbergh and Amelia Earhart, Howard Hughes and Will Rogers, Curtiss and Martin, and Boeing and Lockheed. After World War II, this large portion of coastal Los Angeles between El Segundo and Marina del Rey became the main airport for Greater Los Angeles. With the advent of the jet age in the town of the jet set, LAX became a nexus of international travel and a symbol of sophistication as the "Gateway to the World," a cutting-edge center for the overlapping spheres of aviation, business, politics, and entertainment.