This Day in History: 05/13/1846 - President Polk declares war on Mexico

Children's play areas used to be a lot more dangerous than they are today.

See what’s to come in new episodes of World War II with Tom Hanks, premiering Mon., June 1 at 8/7c and streaming the next day.

A failed attempt to create a super-strong adhesive accidentally results in a weak, reusable one—leading to the unlikely invention of the Post-it Note, which goes on to become one of the world’s most recognizable tools for work and creativity.

A thin slice of potato, born out of frustration, became America’s favorite snack, but the innovations that kept it fresh helped turn a simple snack into a nationwide obsession.