Carol M. Kopp edits features on a wide range of subjects for Investopedia, including investing, personal finance, retirement planning, taxes, business management, and career development.

In his book The Mathematical Universe, mathematician William Dunham wrote of John Venn’s namesake legacy, the Venn diagram, “No one in the long history of mathematics ever became better known ...

While 2024 was all about vintage watches and expensive alarm clocks, different status symbols are taking over ... just look at Sabrina Carpenter wearing them. Car air fresheners are out, and ...