1 Low blood levels of calcium may be caused by low levels of protein (albumin) in the blood, because about half of all calcium in the blood is attached to albumin. 2  For this reason, an ionized calcium level (which is not attached to albumin) and a blood albumin level may also be measured. Low blood levels of calcium may be caused by low levels of protein (albumin) in the blood, because about half of all calcium in the blood is attached to albumin. 2  For this reason, an ionized calcium level (which is not attached to albumin) and a blood albumin level may also be measured.
Manitou Cliff Dwellings. The Manitou Cliff Dwellings are a group of relocated Anasazi ruined cliff dwellings and a museum located just west of Colorado Springs, Colorado on U.S. Highway 24 in Manitou Springs. The Anasazi Museum was established in 1904 and opened to the public in 1907.
The Ancient Structures at Tiahuanaco. They are arguably the oldest, and most baffling ruins on the face of the Earth. It is hard to imagine how they did not come to be known as one of the wonders of the world like the Great Pyramid. Spectacular in its own right, the Great Pyramid is, yet it pales in comparison to the ruins of Puma Punku in Tiahuanaco, in South America. The ruins of Puma Punku are one of four structures in the ancient city of Tiahuanaco. The other three structures are the Akapana Pyramid, the Kalasasaya Platform, and the Subterranean Temple. Even with modern day technology and information, these structures defy logic, and confound those who seek to solve the mysteries that lie within them. The ruins of Puma Punku are said to be the most fascinating, and most confusing of all. Who built these structures? How were these structures built?