Latest Steven Shirey Stories
Ancient minerals tell story of planet's distant past.
Jewelers abhor diamond impurities, but they are a bonanza for scientists.
The world's richest source of platinum and related metals is an enigmatic geological structure in South Africa known as the Bushveld Complex. This complex of ancient magmas is known to have formed some two billion years ago, but the source of its metallic riches has been a matter of scientific dispute. Now researchers from the Carnegie Institution and the University of Cape Town have traced the origin of the unique ore deposits by using another of South Africa's treasuresâ€”diamonds.
- a study of the individuals in a group of people within a specific context and their relationships.
- In rhetoric, the description of any one's personal appearance.