Showing results for "Wallace" in Science & Technology

Can species change? Or go extinct? In the eighteenth century, most people answer no to both questions. But in the century that follows, that certainty gets challenged as some people in Europe question the common belief that all creatures are the same as they’ve been since life’s creation. The Evolution of an Idea, the second volume of Discovering Life’s Story, opens with the Swedish naturalist Carl Linnaeus, who attempts to create an organizing system for the myriad forms of life on earth.

In May 1869, the U.S. railroad network unified when the Central Pacific and Union Pacific railroads came together in Promontory, Utah. The Transcontinental Railroad: The Gateway to the West discusses this important milestone in the expansion of the United States and its impact on the nation, both positive and negative. This book tells how the east-west railroad played an integral role in opening western markets to the residents of the eastern United States, but it also examines how the railroad led to the demise of many American Indian groups in the West.