"Rene Descartes is the philosophical architect of our modern world. In metaphysics, he established the view that mind and body are distinct substances, a position foundational for any belief that the human soul is immortal. In mathematics, he invented analytic geometry - the basis of calculus - which makes physics as we know it possible. Descartes perfected the method of proposing and testing hypotheses with experiments that anyone can repeat, which...

Hypothetical models of eight ways of life synthesized from factual information about the interaction of selected primates with the physical environment.

"The dramatic story of several generations of cavers whose exciting and dangerous explorations in Kentucky's limestone labyrinths culminated in the big connection between the Flint Ridge Cave System and Mammoth Cave, forming the longest cave in the world"--Jacket subtitle.