The assassination of Robert F. Kennedy on June 5, 1968, sent shockwaves through the United States. As a father of 11 and a vocal advocate for children’s welfare, Kennedy’s death intensified concerns over violence in media, including Saturday morning cartoons.

In the 19th century, yellow fever outbreaks created fears that letters could carry contagion. To combat this, U.S. post offices used spiked paddles to puncture envelopes, allowing fumigation gases like sulfur dioxide to disinfect the contents.

In the early 1970s, Advanced Vehicle Engineers (AVE) sought to revolutionize transportation with the Mizar, a flying car that combined a Ford Pinto with the wings and tail of a Cessna Skymaster. This hybrid vehicle aimed to merge road and air travel, offering unparalleled convenience.

On December 7, 1941, the Japanese attack on Pearl Harbor plunged the Hawaiian Territory into chaos. Fearing further attacks and potential espionage, the U.S. military swiftly declared martial law. The civilian government was suspended, and General Delos Emmons assumed control, making Hawaii a militarized zone.

In 1971, English scientist Stewart Adams faced a throbbing hangover after a celebratory night in Moscow. With an important speech looming, he took a 600-milligram dose of a new drug he had helped develop. To his amazement, the headache vanished, marking an impromptu and successful test of ibuprofen.

In 1960, upholsterer Robert Carrier found his son, Mike, and friends sliding dangerously on a wet concrete driveway in Lakewood, California. Concerned for their safety, Carrier brought home a 50-foot roll of Naugahyde, a slick waterproof fabric, creating a safer sliding surface. This playful moment inspired an invention.

In 1896, Magnus Volk, a pioneer of electric railways, unveiled the Brighton and Rottingdean Seashore Electric Railway. The track, dubbed the “Daddy Long Legs,” was designed to run along the seashore, allowing passengers to travel above the waves between Brighton and Rottingdean in East Sussex.

The power of the U.S. president to grant pardons has shaped the outcomes of significant legal and political disputes. Provided under Article II of the Constitution, this authority allows the president to offer clemency for federal offenses. Over the years, many famous individuals have benefited from this constitutional provision.

In the 1870s, American firefighters descended from their quarters using spiral staircases or tube chutes. Both were slow in emergencies. One day, a firefighter at Chicago’s Company 21 slid down a wooden hay pole during a call, inspiring Captain David Kenyon to create a permanent pole for faster descents.

On December 2, 1943, German bombers struck the Allied-occupied port of Bari, Italy, in a surprise nighttime raid. The attack sank 17 ships, set the harbor ablaze, and killed over 1,000 people. Amid the chaos, one ship, the SS John Harvey, carried a deadly secret—100 tons of American mustard gas.