About 500 million years ago, not a single creature had a skull. Over time, these bony plates evolved into the structural marvels that vertebrates—animals with spinal cords, aka you, me, and your pug, ...

Add Yahoo as a preferred source to see more of our stories on Google. The skull of a child who died in the 15th or 16th century was found by workers digging a pipeline in northwest Argentina. | Credit ...

PHOENIX, Ariz.: A number of alien-like skulls have been discovered in a 1,000 year old cemetery in Mexico. The finding initially stunned the researchers, however, upon closer inspection the skulls ...

This archived news story is available only for your personal, non-commercial use. Information in the story may be outdated or superseded by additional information. Reading or replaying the story in ...