"This book is unique -- the stirring story of war in all its phases from 490 B.C. to our own day. Since its first appearance fifteen years ago it has become a c

Where did math come from? Who thought up all those algebra symbols, and why? What is the story behind π π? … negative numbers? … the metric system? … qu

What people throughout history ate and wore, how they worked and played, how they built and furnished thir homes, and how they treated their illnesses provide t

Look around you! Glass is everywhere: the mirror where you brush your teeth in the morning, the test tube in your science class, and your cup of juice on the di