"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 ...

Life aboard a nuclear submarine is a strange mix of advanced technology and extreme confinement. Crews can stay submerged for months because they generate their own oxygen through electrolysis and ...

Black History Month began as merely a week back in 1926 thanks to the efforts of one man: Carter G. Woodson. A scholar and ...

Stay sharp and learn something new every day or stock up on knowledge for the next 105 days with these fun facts about life, history, food, and more. Although “fun” is in the name, don’t be fooled.