The "MENstruation" campaign suggests people would be more comfortable talking about periods if everyone had them.

Chicago Humanities Festival (CHF) is raising awareness for its fall speaker, “Game of Thrones” author George R. R. Martin, by training ravens to deliver messages, similar to their roles on the TV and book series. The campaign, in partnership with FCB Chicago, encouraged community members to get tickets to the event by dropping special deliveries overhead at local houses, high-rise apartments or at unsuspecting recipients. Martin’s speaking engagement at Chicago Symphony Orchestra takes place Oct. 11.

PETA's new Pixar-style ad lures viewers with cute shots of mice before coldly shifting to animal experimentation.