Inhaling helium and talking like Daffy Duck is a classic party trick ... The sound of your voice starts in your voice box, or larynx. It’s a two-inch piece of cartilage at the top of your ...

Both the larynx and the syrinx are made up of soft ... The fossil belonged to a species of aquatic birds that resembled ducks and lived during the Cretaceous period which was 66 to 68 million ...