Apparently science has proven Neanderthals did not contribute to the genetic make-up of modern Europeans. Computer analysis shows the differences between modern humans and Neanderthals are significantly greater than those found between subspecies of living monkeys and apes.

"We interpret the evidence presented here as supporting the view that Neanderthals represent an extinct human species and therefore refute the regional continuity model for Europe," New York University paleoanthropologist Katerina Harvati and colleagues wrote in the Proceedings of the National Academy of Sciences.

Ok, that may excuse my in-laws but what about the Aliens?