The Pink Trombone is an interactive graphic that shows how the human voice works. The sound is produced in the larynx, and different sounds that produce language are caused by the actions of the tongue, palate, lips, and nasal cavity, all of which you can manipulate onscreen. Click around and explore what happens. You can hear the sounds of consonants changing as you close the oral cavity from the lips on back, from p to d to dr to w to g. Now change the shape of the tongue and do it again. I even managed to produce throat clicks. However, you are warned that the web toy may perform poorly on a Firefox browser, and sure enough, after some time I had to relaunch. Still worth it. -via Kottke