Bouncing rice: Hey, if there’s internet video, fake rice must be real, right? A short history of sliced bread. Scientists study what supposedly are the best smiles, then say don’t worry “if your smile doesn’t fall within the optimum window.” And new study shows that the rise of frogs came after the asteroid that killed off the dinosaurs.
Photo: A huge smiley face made out of an old satellite dish in Salem, Illinois, in 2006. (David Carson/St. Louis Post-Dispatch/MCT)