People kiss at weddings because kisses were used in ancient times to seal contracts.
The Japanese developed an underwater aircraft carrier in WWII.
In WWII Britain deceived the Nazis using a dead homeless person, enabling Allied troops to invade Italy.
In the 1920s, Philadelphia Mayor J. Hampton Moore created a “smelling squad” to patrol the banks of the Schuylkill and Delaware rivers and hunt down the sources of the most obnoxious odors.
Genghis Khan helped wipe 700 million tons of carbon from the atmosphere impart because of the 40,000,000 people he killed.
In 1908 there were electric cars capable of racing 100 miles with a single charge.
During WW2 it is suspected that soap was made from human corpses.
Hitler had a openly gay friend, until he had him murdered for political reasons. They were so close, he was the only Nazi Hitler addressed as “du” (the German familiar form of “you”). He was also the only man in Germany to call Hitler “Adolf”, rather than “Mein Führer”.
Dinosaurs could not have roared because they lack a vocal system.
Klerksdorp spheres are small objects, often spherical to disc-shaped, that have been collected by miners and rockhounds from 3-billion-year-old pyrophyllite deposits. They have been cited by alternative researchers and reporters in books, popular articles, and many web pages, as inexplicable out-of-place artifacts that could only have been manufactured by intelligent beings.