"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Stay sharp and learn something new every day or stock up on knowledge for the next 105 days with these ...

2. In 1137, a 14-year-old girl named Eleanor became the "greatest heiress in the known world." She was, in her own right, the Duchess of Aquitaine and ruled it independently through her two marriages.

Explore 25 interesting facts about disease outbreaks that shaped history. From ancient plagues to modern pandemics, uncover ...

What wasn't known at the time of the issue of the bull was just how far east South America extends into the Atlantic. The east coast of Brazil lies over 2,000 miles east of the Bahamas, where Columbus ...

February is Black History Month. The annual observation is set aside to spotlight the contributions of Black Americans and increase awareness around the heritage, culture and sacrifices that helped ...