And maybe it was...

Have you ever though of time travel? I do and I have a hypothesis...

It were not extraterrestrials who came to Earth in the past and helped us built Pyramids and gave a beginning to our civilization...

Much is heard in the media about the fact that our planet is threatened, contaminated, the danger of global warming, if we do not stop over-exploit so our world may cease to exist...

Du you know deja vu?

I think that we already destroyed our planet in the past...and we did make a travel to fix what we have done to the Earth.

This is our second life. Now we are half way through...

I think our technology was so much advance that we found the way to move back in time to the very beginning and start everything again.

That`s why you can find the paintings and coils from ancient Egyptian and Mayan, and from different sources about astronauts...they pictured what they really saw-us.

Probably we did not want to leave any trace but the ancient did it..

Because how to explain that extraterrestrial did not arrive to Earth for a such long time?

Why they did not leave any messages for us?Why we have only some paintings that we can interpret in different ways?

Why the ET was such mysterious?

Why in only this time people used to be so smart...and later big bum...

I think we did it...but not very good cause now we are facing the same problems again...