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TIL in 1919 Army Lt. Col. Dwight D. Eisenhower took part in a cross country convoy. Due to poor road conditions, they averaged only 5mph from DC to SF. This experience led to his creation of the Interstate Highway System during his presidency.

Read more eisenhower.archives.gov

via reddit.com

R7Vjl TIL IN 1991 the inspiration for the world's first webcam came when they installed camera to save people working in the building the disappointment of finding the coffee machine empty after making the trip in Trojan Room in the old Computer Laboratory of the University of Cambridge, England,
QNVNk TIL that Buzz Aldrin was known among his fellow astronauts to be very difficult to work with, to the point that Neil Armstrong was offered the chance to replace Aldrin with someone else for the Apollo 11 Moon landing. Armstrong thought it over for a day before choosing to stick with Aldrin.
rRlZy TIL About Ama, female Japanese pearl divers that start diving at the age of 12-13, and are well active into their 70s. They endure freezing conditions and great pressure from deep sea depths to get pearls. They have a unique technique in which they release air in a long whistle as they resurface.
R7re9 TIL that In February 1939, Lise Meitner described a groundbreaking nuclear phenomenon in a letter to Nature editor and called it Nuclear Fission. Five years later, a Nobel prize was awarded to Otto Hahn for the discovery of fission; a word he never used in his original paper.
9nOX TIL that about 18% of California’s irrigation water is used to farm Alfalfa - a quarter of which is exported to places like China, Japan and Saudi Arabia.