New Scientist has a top-five run-down of vestigial organs that humans (arguably) no longer need.
(I imagine a number of readers will share in my vehement agreement that wisdom teeth (more properly known as third molars) are on the list … my unreasoning dislike of dentistry has been mentioned here before, and the consequences of an overcrowded jaw were a major contributing factor to that reaction.) [image by Lone Primate]
So, now we know which stuff we don’t need, how do we go about removing it from the human system? Permanently?