University presidents face backlash after antisemitism congressional hearing. "48 Hours" reports on disappearance of Andreen McDonald. Innovative wheelchair designunlocks possibilities for kids with disabilities. Federal Trade Commission warns scammers are using QR codes to steal personal information. Gene editing could be a gamechanger for patients with sickle cell disease. As the Israel-Hamas war rages on, hostage families light candles for Hanukkah.