Like most human traits, blue eyes are determined by genes, and no two people have exactly the same hue. It works a lot like ...

Blue eyes are caused by a gene mutation ... The exact cause remains to be determined, but scientists do know that eye color began to change long before recorded history began.

Authorities search for a missing 73-year-old man in Burnet County, issuing a Silver Alert due to his cognitive impairment and potential health and safety threat.