It's the world's largest gathering of twins — and one big lab for researchers. Twins Days, an annual festival in Twinsburg, Ohio, draws rubberneckers and scientists, who come every summer to study twins' genetics and behavioral differences.
We think we know patriotism when we see it. A veteran in uniform saluting the flag, say, or a line of professional athletes standing at attention during "The Star-Spangled Banner." But when one of those athletes kneels, it gets complicated.
Like mischievous children, comedians have long pushed boundaries to see what they can get away with. From Lenny Bruce to Ellen DeGeneres, here are six times when comedy broke barriers, shocked audiences and pushed society forward.