Ancient Aliens: Season Two

Is it possible that intelligent life forms visited Earth thousands of years ago, bringing with them technology that drastically affected the course of history and mans own development? ANCIENT ALIENS launches all-new expeditions to seek out and evaluate this evidence, with a concentration on discoveries of the last 30 years, including unusual DNA findings on mans evolution and newly decoded artifacts from Egypt to Syria to South America. It is a balanced investigation into a theory some believe cannot be true, but many agree cannot be ignored.