This authoritative reference book brings world history to life, from early humans to the current war on terror. Along the way, it reveals riveting facts on the founding of the great Roman Empire, the
With today's emphasis on fast-moving technology, as well as increasing pressure to meet the testing standards of science and math in the classroom, the need to grasp key scientific principles has nev
What's the difference between a star and a planet? What killed the dinosaurs? What is acid rain? Who built the first cities?—a host of straight-to-the-point, and equally eccentric questions
