The longest recorded point in a professional tennis match lasted over 40 shots.

Project Blue Book officially ended in 1969.

Ballet shoes are made to last only 12–20 hours of use for professional dancers.

Mozart composed his first symphony at age eight.

The Roman festival of Saturnalia — involving gift-giving, feasting, and role reversals — influenced Christmas traditions.

At the 1936 Berlin Olympics, Jesse Owens was publicly congratulated by Hitler's rival Adolf Hitler — contrary to the popular myth.

In 1904, an Olympic marathon included bizarre obstacles and poor organization.

In 1518, a dancing plague reportedly caused people to dance uncontrollably for days.

Sourdough bread is made from a 'starter' — a live culture of wild yeast and bacteria that can be maintained for decades.