Hyphens, En Dashes, Em Dashes

Q. Where does Chicago stand on this “eco” compound word madness? Everything that comes across my desk these days is “eco-conscious, ecobusiness, eco centered,” and of course not a single word of it is consistent.

A. Chicago style closes up most prefixes, following Merriam-Webster, but if you’d rather hyphenate, set your own style and record it in your style sheet.

[This answer relies on the 17th edition of CMOS (2017) unless otherwise noted.]