Walter Sullivan Libros

A history of the Polar Regions looking at the geography, climate and life of the Arctic and Antarctic, goth people and animals, and also a look at the explorers and scientists who visited with emphasis on those who discovered them.

Exploring one of the most awesome mysteries of the universe, Sullivan examines recent research on the phenomenon of black holes and explains in nontechnical terms its implications concerning our understanding of time, space, and the origin of the universe