Museum curators at the National Museum of American History have confirmed one family’s oral history that the inside of Abraham Lincoln’s pocket watch was engraved with a secret message. Watchmaker Jonathan Dillon was holding the president’s watch when he heard that first shots of the Civil War had been fired, and he recorded the event […]

The behavior of a male chimp at Sweden’s Furuvik Zoo is said to be the first clear evidence that a non-human animal can engage in planning. Santino collects rocks before the zoo opens and stores them as ammunition to hurl at human onlookers later in the day. “This ape must have learned that during displays […]