Jewel

Pyramid Tomb Found: Signs of Civilization’s Birth?

Publication: National Geographic News   Date: May 18, 2010   View Article

After sheltering jeweled royals for centuries, the oldest known tomb in Mesoamerica—ancient Central America and Mexico, roughly speaking—has been uncovered, archaeologists announced Tuesday.

Apparently caught between two cultures, the 2,700-year-old pyramid in Chiapa de Corzo (map), Mexico, may help settle a debate as to when and how the mysterious Zoque civilization arose, according to excavation leader Bruce Bachand.

Group of Microbes Change Dissolved Gold to Solid

Publication: National Geographic News   Date: August 30, 2001   View Article

Breathing is a rich experience for a group of unusual microbes that typically live deep beneath the sea.

A microbiologist has found that microscopic organisms known as extremophiles breathe in dissolved gold and out comes the stuff of gold rings, necklaces, and earrings. The finding may explain how some gold ore deposits formed.

© 2008-2010 Collected Writings By John Roach