The first around-the-world air race was sponsored to prove that the airplane had a commercial future. Four pilots took off from Seattle and two returned 175 days later.
In 1960, Francis Gary Powers' U-2 spy plane was shot down over the Soviet Union.
The Pennsylvania Railroad Company accomplished an enormous engineering feat, but destroyed a great architectural monument.
The internationally famous carnival of delights in New York was the birthplace of the hot dog and the roller coaster.
The Alaskan Highway stands today as one of the boldest homeland security initiatives ever undertaken.
Major Walter Reed's discovery in 1900 that mosquitoes spread yellow fever halted an outbreak and led to the disease's eventual eradication.
It was the deadliest workplace accident in New York City’s history.
The international race to develop biological weapons during the 20th century.
How do you manage weapons of mass destruction without being destroyed by them?