At the height of the space race in the 1960s, the United States pursued an accelerated program to put men on the moon before the Soviet Union. Apollo 1 was to be the first crewed mission of the United States Apollo program, the undertaking ...
The SS Sultana was an impressive steamboat that ran regular trips up and down the Mississippi River during the Civil War. Then, in the wake of the assassination of President Abraham Lincoln, the SS Sultana ...
The rain pelted the men that desperately tried to save the dam, located 14 miles upstream of the town of Johnstown, PA in the southwest corner of the state. Hours earlier, Elian Unger, the president of the South ...
It was one of the world’s most ambitious bridge engineering projects of the time. When completed, the Quebec Bridge would be the longest cantilevered bridge in the world and connect the busy ports on either ...
The Charles de Gaulle airport in Paris, France is the largest airport in France and the second busiest airport in Europe. Every year, millions of passengers and hundreds of thousands of flights depart and arrive ...
By 1937, giant hydrogen airships were sailing through the world’s skies, ferrying thousands of passengers across oceans and continents. These airships, also called zeppelins, promised quicker transport times than ...
It’s an old adage that sometimes the unthinkable happens. Well, sometimes the unsinkable happens too. In the early morning hours of April 14, 1912, the largest luxury passenger liner ever built...
The town of Pripyat in the Soviet Socialist Republic of Ukraine was new, pleasant and boasted both prosperity and job security as the location of the advanced, modern Chernobyl Nuclear Power Plant ...
Unlike the Twin Towers, WTC 7 was not directly hit by an airplane, yet it collapsed completely, making it the first known instance of a tall building brought down primarily by uncontrolled fires. This article aims to explore the structural causes behind the collapse of WTC 7 from an engineering perspective.
The vapor cloud found an ignition source - most likely a running vehicle or a spark from a nearby contractor's trailer - and ignited. The resulting explosion was equivalent to approximately 1,000 to 2,000 kilograms of TNT, and it was felt up to five miles away.
