Presents the video “Killer Floods” on Friday, July 19, at noon, in Redfield Auditorium, 45 Water St., Woods Hole. All over the world, scientists are discovering traces of ancient floods on a scale that dwarfs even the most severe flood disasters of recent times. What triggered these cataclysmic floods, and could they strike again? In the Channeled Scablands of Washington State, the level prairie gives way to bizarre, gargantuan rock formations. Sponsored by the WHOI Visitor Center. Coffee, tea, and cookies served. Donations accepted.