Read this article to help understand and describe Einstein's general theory of relativity.

Explains what is meant by the Theory of Continental Drift, its earliest proponents, the stages of continental drift, the causes related to tectonic plate movement, the evidence that has been found, and how the Himalaya Mountains offer...

This site about Albert Einstein examines many of his theories. It also includes a list of Einstein quotes and references.

By the end of this section, you will be able to describe the definition, aims, and branches of physics; describe and distinguish classical physics from modern physics and describe the importance of relativity, quantum mechanics, and...

A decent explanation of the concept of time as the fourth dimension. The author discusses Einstein's theory of special relativity and the idea of space-time.

A detailed discussion of the nature of light, how it can travel through a vacuum, and how the speed of light is affected when light travels through a medium.

Explains what the ecological systems theory is and it relates to child development. Looks at five environmental contexts that impact on a child's life and development. Provides examples of how different events within these frameworks...

Explains the Lost Colony DNA Project which is attempting to find genetic links between people living today and the lost colonists of Roanoke Island. Also provides a list of family names of colonists and of descendant families that may be...