Light can be sculpted into countless shapes. Yet building optical devices that can simultaneously manipulate many different ...

The key themes that defined the year behind us will also shape the one ahead. The most-read articles of 2025 tracked a return ...

The Chicago Manual of Style is an American English style guide published by the University of Chicago Press. The Manual’s guidelines for publishing, style and usage, and citations and indexes—known as ...

Lucas Downey is the co-founder of MoneyFlows, and an Investopedia Academy instructor. Dr. JeFreda R. Brown is a financial consultant, Certified Financial Education Instructor, and researcher who has ...