 After a break, we'll remember Dr. Ruth Westheimer, the diminutive, grandmotherly German-Jewish sex therapist who became a media star. She died last week at age 96. Also, critic-at-large John Powers reviews the new movie Twisters, and I review the new Apple TV Plus non-fiction food series Omnivore. I'm David Bianculli, and this is Fresh Air. No one ever asked before, before, because they never knew.