John Dvorak
Author
Language
English
Description
Geology has long been a puzzling science. The theory of plate techtonics advanced geographical study immensely but plate techtonics can't explain the Black Hills or the walls of chalk in the fertile Kansas basin. What else has been and is creating the landscape of North America?
Author
Language
English
Description
Eclipses have stunned, frightened, emboldened and mesmerized people for thousands of years. They have been thought of as harbingers of evil as well as a sign of the divine. An amazing phenomena unique to Earth, they have provided the key to much of what we now know and understand about the sun, our moon, gravity, and the workings of the universe. Dvorak provides explanations as to how and why eclipses occur-- as well as insight into the forthcoming...