Ben has been on a cruise, and brings back an interesting story on how quickly rumors and conspiracy theories can form in that environment. We pay tribute to Joe Nickell, a truly versatile skeptic and investigator, and go over the Stand Up for Science marches that took place last week. Then we turn to current events wrought by the Trump administration: the kerfuffle over "transgender mice" is more complicated than you think; RFK's faint praise of the MMR vaccine; and the CDC's planned study on vaccines and autism.