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TIL that in 1933, Dr. W. Franklin Dove, a biologist, created a “unicorn bull.” It became leader of the herd, but was also “unusually gentle and mild mannered.”

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pYxKb TIL That The Top 50 Oldest Living People Are All Females. The oldest known living person is Tomiko Itooka of Japan, aged 116 years, 186 days.
X0Jr6 TIL between 1973 and 2011, sperm counts have declined by 50-60% among men from North America, Europe, Australia and New Zealand
l7lwa TIL For centuries the Romans used a period of eight days in civil practice, but in 321 CE Emperor Constantine established the seven-day week in the Roman calendar and designated Sunday as the first day of the week.
Oord1 TIL that the shortcut SHIFT + TAB moves you back to the previous input field. I no longer have to TAB 10 times to get back to the field I skipped
MeYMb TIL The Black Death originated in Central or East Asia and spread to Europe via Italy.