About Time: Einstein's Unfinished Revolution

Examining the consequences of Einstein's relativity theory, an original work explores the mystery of time and considers black holes, time warps, time travel, the existence of God, nature of the universe, and humankind's place in the cosmos. 35,000 first printing. Tour.

The Companion Encyclopedia of Geography provides an authoritative and provocative source of reference for all those concerned with the earth and its people. This Companion examines both physical and human geography, and the relationship between the two. An international team of forty-seven geographers, all recognized figures in their discipline, chart the development of humankind's diverse habitat and the social and economic activities within that habitat up to the present day, and look to the future.