April 18, 2012 3:16 pm Recognizing Autism's Earliest Warning Signs Dr. Joshua Weiner offers tips on detecting autism in babies as young as six months to one year old. Local 0:40 Man stabbed to death near Audi Field in DC 1:37 Pro-Palestinian protesters gather outside White House correspondents' dinner 0:43 American University locked down before man arrested on campus 3:08 Family holds memorial for brothers, 3 and 6, who died after Clifton house fire 2:05 ‘People immediately hit the ground': 6 hurt in shooting outside DC nightclub