The World Grid
- Episode aired Nov 11, 2013
Pyramids are found all over the world and from different time periods in human history. Did humans build the pyramids by themselves - or did they have help? Some experts believe pyramids acr... Read allPyramids are found all over the world and from different time periods in human history. Did humans build the pyramids by themselves - or did they have help? Some experts believe pyramids across the world are part of a grand alien design.Pyramids are found all over the world and from different time periods in human history. Did humans build the pyramids by themselves - or did they have help? Some experts believe pyramids across the world are part of a grand alien design.