Hey,heres a thought,what if the the guys in alien resurrection wanted to clone the aliens so that way they whould have a weapon to use against the predators.Sounds cool huh?It whould make sense.How they found out about the aliens is because of the temple and the town,but they could not clone them because there acid blood kept melting the equipment,but they needed a weapon against the predators so they kept an eye out for the aliens over the centuries!.And the reason they needed Ripley was because the alien DNA got damaged from the cryogenics,whereas the predators knew exactly how to freeze em!.