The transcontinental railroad's construction touched the lives of hundreds of thousands of people. Some desired it, some built it, and some did everything in their power to stop it. Browse a photo gallery of settlers, Native Americans, and workers whose lives were affected by the railroad as it traversed the West.
The grave truth behind modern forensics was discovered in 1920s New York.
A six-hour series on how the West was lost and won, from the Gold Rush in 1848 until Wounded Knee in 1893.
After 18 years of struggles, the Golden Gate Bridge opened on May 27, 1937.
Native Alaskans, oil company representatives, environmentalists, politicians, and others tell the story of the 800-mile pipeline.
Though first seen only as an expensive luxury, Alexander Graham Bell's telephone soon transformed American life and became a necessity.
The effort of pioneering researchers to conceive babies through in vitro fertilization.
The Chiricahua Apache medicine man and warrior who refused to accept white man's 'civilization.' Part of The Wild West collection.
President Theodore Roosevelt was caught in the middle of the first major battle for wilderness preservation in Yosemite National Park.