TIL almost all calico cats are female. The gene for coat color is on the female (X) chromosome. To get a calico coat, a cat must have a black gene from one parent and an orange gene from the other parent, resulting in all XX females. Sometimes a male calico is born who is XXY, but they're sterile.
TIL in 1913, Gamblers playing Roulette lost Millions of Dollars betting on Red as the Roulette Ball hit Black 26 times in a row. The incident caused outrage as players continued to increase their wagers on Red, believing another Black outcome couldn't happen. The odds of 26 Black = 1 in 136,000,000
TIL The Average Lifetime Earnings of an Engineer ($5,016,723) is higher than the average lifetime earnings of an NFL Player($3,010,000) and an average MLB player ($2,912,000). Furthermore, for the elite engineers have higher average career earnings than NBA players $13,533,236 vs. $12,027,456.
TIL We don't know why cats love cardboard boxes, but one explanation is: "Cats do not appear to develop conflict resolution strategies to the extent that more gregarious species do, so they may attempt to circumvent agonistic encounters by avoiding others or decreasing their activity."
TIL that astronauts are not actually floating. They are falling, but around the Earth instead of towards it. This is because any object orbiting Earth is traveling at a speed of at least 28,160 km/h. As they accelerate towards it, the Earth curves away beneath them and they never get any closer.
TIL "Throwaway Living", a lifestyle of using single-use plastic items was promoted instead of cleaning up after. LIFE magazine (1955) - "The objects flying through the air would take 40 hours to clean, except that no housewife need bother. They are all meant to be thrown away after use."
TIL that over 100 trees in Perryville, Maryland, are covered in mysterious messages from mentally ill veterans from the nearby Perry Point Veteran's Center. The carvings include "Nelson Jochnou 1958", "Help", "Murder", and "Eddie Kenny did not want to murder George Norris but St. Ignatius made him".
TIL of the longest lasting construction project, the Corinth Canal. Dividing the Peloponnese peninsula and mainland Greece, it was first proposed as far back as the 7th century B.C.E., and was officially started by Nero in 67 C.E., but due to complications it was not finished until the 1890s.
TIL that on March 6th 1970, three members of the Weather Underground planted the bomb in the Greenwich Village Townhouse, planning to set it off during a dance for noncommissioned officers and their dates. However, they accidentally detonated the bomb while assembling it, and blew themselves up.
TIL a disproportionate number of elite Canadian hockey players are born in the early months of the calendar year. More physically mature children born early in the year play in leagues vs. kids born late in the year & are often selected as better athletes, leading to coaching for the major leagues.
TIL Winona Ryder was supposed to play the character of Mary Corleone in The Godfather Part III. Because she fell ill, she was replaced by Sofia Coppola, daughter of director Francis Ford Coppola. The role was also set for Rebecca Schaeffer, but she was killed by a deranged fan before filming began