Hamilton to Host TEDx Talks on “Curiosity and Creativity Uninhibited” - TEDx talks will be Saturday. Oct. 10, from 3 to 6:30 p.m., at the Kennedy Center Barrett Theatre. They will be live-streamed and publicly available to everyone.
Use a hyphen when forming nouns, adjectives and verbs that show occupation status: co-author, co-chair, co-worker. Omit the hyphen in other combinations: coeducation, coexist, cooperative.
SOURCE: Hamilton College Editorial Style Guide