You’ve held it, spent it, and probably never looked twice — but your money is hiding secrets. From tiny symbols to hidden faces and overlooked artwork, U.S. and Canadian currency is full of hidden ...

Abstract: It is difficult to separate the point symbols from the scanned topographic maps accurately, which brings challenges for the recognition of the point symbols. In this paper, based on the ...

Ask the publishers to restore access to 500,000+ books. An icon used to represent a menu that can be toggled by interacting with this icon. A line drawing of the Internet Archive headquarters building ...

Scientists have released the first X-ray images of a mysterious ... The sphere also displays symbols that the team compared to ancient scripts, including runes, Ogham and Mesopotamian writing ...

Since 2022, the year of the third edition of this report, progress in the number of Confederate memorials removed or renamed has slowed, but it has not stopped. The work continues.