Ancient Mayan civilization used advanced water treatment technology

[Judi Lynn]

6. So true. It seems all that has changed has been material power, technology.

while the actual inner workings often seem completely primitive.

Maybe some infinite beings have bet on whether we destroy the earth or evolve in time to prevent it!

I believe in your interest in anthropology. So much discovery must be made, so much ignorance overcome. No doubt what lies ahead in this field is going to be stunning, and the attention paid will sustain everyone who's interested.