Engineering
Erie Canal
The Erie Canal is a 363-mile waterway that connects the Great Lakes with the Atlantic Ocean via the Hudson River in upstate New York. The channel, which traverses New York state from Albany to Buffalo on Lake Erie, was considered an engineering marvel when it first opened in ...read more
Why does the Leaning Tower of Pisa lean?
Pick any day in the Piazza del Duomo in the Italian city of Pisa, and you will undoubtedly spot a bunch of tourists posing for the same photo: hands outstretched towards the cathedral’s conspicuously tilting bell tower, as if they are supporting it with their sheer strength. The ...read more
The Secrets of Ancient Roman Concrete
History contains many references to ancient concrete, including in the writings of the famous Roman scholar Pliny the Elder, who lived in the 1st century A.D. and died in the eruption of Mt. Vesuvius in A.D. 79. Pliny wrote that the best maritime concrete was made from volcanic ...read more
St. Lawrence Seaway opened
In a ceremony presided over by U.S. President Dwight D. Eisenhower and Queen Elizabeth II, the St. Lawrence Seaway is officially opened, creating a navigational channel from the Atlantic Ocean to all the Great Lakes. The seaway, made up of a system of canals, locks, and dredged ...read more
Los Angeles Aqueduct
From the time it was founded as a small settlement in the late 18th century, Los Angeles depended on its own river for water, building a system of reservoirs and open ditches as well as canals to irrigate nearby fields. As the city grew, however, it became clear that this supply ...read more
George Waring
After a yellow fever epidemic swept through Memphis, Tennessee in 1878, the newly created National Board of Health sent engineer and Civil War veteran George A. Waring Jr. to design and implement a better sewage drainage system for the city. His success there made Waring’s ...read more
Hoover Dam
In the early 20th century, the U.S. Bureau of Reclamation devised plans for a massive dam on the Arizona-Nevada border to tame the Colorado River and provide water and hydroelectric power for the developing Southwest. Construction within the strict timeframe proved an immense ...read more
Golden Gate Bridge opens
San Francisco’s Golden Gate Bridge, a stunning technological and artistic achievement, opens to the public after five years of construction. On opening day–“Pedestrian Day”–some 200,000 bridge walkers marveled at the 4,200-foot-long suspension bridge, which spans the Golden Gate ...read more
Aswan High Dam completed
After 11 years of construction, the Aswan High Dam across the Nile River in Egypt is completed on July 21, 1970. More than two miles long at its crest, the massive $1 billion dam ended the cycle of flood and drought in the Nile River region, and exploited a tremendous source of ...read more
William McKinley, first U.S. president to ride in a car, is born
On January 29, 1843, William McKinley, who will become the 25th American president and the first to ride in an automobile, is born in Niles, Ohio. McKinley served in the White House from 1897 to 1901, a time when the American automotive industry was in its infancy. During his ...read more
William Cobb demonstrates first solar-powered car
On August 31, 1955, William G. Cobb of the General Motors Corp. (GM) demonstrates his 15-inch-long “Sunmobile,” the world’s first solar-powered automobile, at the General Motors Powerama auto show held in Chicago, Illinois. Cobb’s Sunmobile introduced, however briefly, the field ...read more
Ralph Nader’s “Unsafe at Any Speed” hits bookstores
On November 30, 1965, 32-year-old lawyer Ralph Nader publishes the muckraking book Unsafe at Any Speed: The Designed-In Dangers of the American Automobile. The book became a best-seller right away. It also prompted the passage of the National Traffic and Motor Vehicle Safety Act ...read more
Three-point seatbelt inventor Nils Bohlin born
Nils Bohlin, the Swedish engineer and inventor responsible for the three-point lap and shoulder seatbelt–considered one of the most important innovations in automobile safety–is born on July 17, 1920 in Härnösand, Sweden. Before 1959, only two-point lap belts were available in ...read more
Pennsylvania man buried with his beloved Corvette
On May 25, 1994, the ashes of 71-year-old George Swanson are buried (according to Swanson’s request) in the driver’s seat of his 1984 white Corvette in Irwin, Pennsylvania. Swanson, a beer distributor and former U.S. Army sergeant during World War II, died the previous March 31 ...read more
Panama Canal turned over to Panama
On December 31, 1999, the United States, in accordance with the Torrijos-Carter Treaties, officially hands over control of the Panama Canal, putting the strategic waterway into Panamanian hands for the first time. Crowds of Panamanians celebrated the transfer of the 50-mile ...read more
St. Louis’s Gateway Arch is completed
On October 28, 1965, construction is completed on the Gateway Arch, a spectacular 630-foot-high parabola of stainless steel marking the Jefferson National Expansion Memorial on the waterfront of St. Louis, Missouri. The Gateway Arch, designed by Finnish-born, American-educated ...read more
English Channel tunnel opens
In a ceremony presided over by England’s Queen Elizabeth II and French President Francois Mitterrand, a rail tunnel under the English Channel was officially opened, connecting Britain and the European mainland for the first time since the Ice Age. The Channel Tunnel, or ...read more
Chunnel makes breakthrough
Shortly after 11 a.m. on December 1, 1990, 132 feet below the English Channel, workers drill an opening the size of a car through a wall of rock. This was no ordinary hole–it connected the two ends of an underwater tunnel linking Great Britain with the European mainland for the ...read more
Building of Hoover Dam begins
On July 7, 1930, construction of the Hoover Dam begins. Over the next five years, a total of 21,000 men would work ceaselessly to produce what would be the largest dam of its time, as well as one of the largest manmade structures in the world. Although the dam would take only ...read more
Brooklyn Bridge opens
After 14 years, the Brooklyn Bridge over the East River opens, connecting the great cities of New York and Brooklyn for the first time in history. Thousands of residents of Brooklyn and Manhattan Island turned out to witness the dedication ceremony, which was presided over by ...read more
Tacoma Narrows Bridge collapses
The Tacoma Narrows Bridge collapses due to high winds on November 7, 1940. The Tacoma Narrows Bridge was built in Washington during the 1930s and opened to traffic on July 1, 1940. It spanned the Puget Sound from Gig Harbor to Tacoma, which is 40 miles south of Seattle. The ...read more
Dam gives way in Georgia
On November 6, 1977, the Toccoa Falls Dam in Georgia gives way and 39 people die in the resulting flood. Ninety miles north of Atlanta, the Toccoa (Cherokee for “beautiful”) Falls Dam was constructed of earth across a canyon in 1887, creating a 55-acre lake 180 feet above the ...read more
U.S. and French military barracks in Beirut hit by massive car bombs
On October 23, a suicide bomber drives a truck filled with 2,000 pounds of explosives into a U.S. Marine Corps barracks at the Beirut International Airport. The explosion killed 220 Marines, 18 sailors and three soldiers. A few minutes after that bomb went off, a second bomber ...read more