I think What the Ancients Knew
is a great show and is on the Science Channel. I think anyone who believes in Ancient Aliens should sit down and watch the show on the construction of the pyramids.
Humans beings don't give human beings enough credit...we often suck but we're also pretty amazing too...our brains condition us for survival, to seek and find the negative, but as natural selection has basically disappeared, and humans have our own evolution in our hands we can certainly do something about our mistakes. Pyramids are child's play.