text: lice provide clue to prehistoric lives A study of an ancient human pest - head lice -uggests that the ancestors of today #39;s American Indians may have met and fought with pre-humans long extinct elsewhere, scientists said on Tuesday.
inputs: lice provide clue to prehistoric lives A study of an ancient human pest - head lice -uggests that the ancestors of today #39;s American Indians may have met and fought with pre-humans long extinct elsewhere, scientists said on Tuesday.