Uncover the hidden symbols on the US dollar bill, from the Great Seal to mysterious designs like the owl and spider.
The penny is ancient, but its origins are a puzzle. Discover theories behind its name and history.
Producing coins costs more than their value. Explore why certain denominations may be phased out.
Cryptocurrency, like Bitcoin, is reshaping finance. Understand its rise and impact.
D.B. Cooper's disappearance after hijacking a plane baffles investigators. Delve into one of America's greatest unsolved mysteries.