Introduces a world invisible to the naked eye and discusses the different types of microscopes available, the steps for the preparation and study of specimens,

From deep within the human body to distant nebulae in outer space, there are worlds all around us that are smaller, faster, and farther than the unaided eye can

With its emphasis on the history and philosophical foundations of physics, this book will interest lay readers as well as students and professionals. The distin

Four seventh graders solve a threatening environmental issue with the help of their power animals.

Shows and describes wildlife in Africa, Costa Rica, Guyana, Antarctica, the Yukon, and Papua New Guinea