On February 1, 1913, more than 150,000 people eagerly rushed to Grand Central Terminal to gaze at New York City's newest landmark. A marvel of engineering, architecture, and vision, the new Beaux Arts structure on 42nd street housed an underground electric train station that would revolutionize the way people traveled and transform midtown Manhattan.
Major Walter Reed's discovery in 1900 that mosquitoes spread yellow fever halted an outbreak and led to the disease's eventual eradication.
Engineer James Eads tamed the mighty Mississippi, turning New Orleans into the second largest port in the nation.
John Philip Sousa was America's favorite bandmaster.
The impact of tuberculosis in America, once the deadliest killer in human history.
Engineered by William Barclay Parsons, the 21-mile, four-track route of the New York City Subway was the largest public works project in history.
The staggering death tolls of the Civil War permanently altered the character of the republic and the psyche of the American people.
What happened when the lights went out in New York City on July 13, 1977?
The first around-the-world air race was sponsored to prove that the airplane had a commercial future.