Popular Science Mini Guides Earth Author:John Malam Want to know all about Earth?from how it was formed to how its climate varies? Look at our small blue planet?s position in space and the solar system; its amazing structure (what is it made of and how it is changing); and it?s marvelous geographical features?volcanoes, rivers, mountains?and its life-giving gifts of water and air. Facts and figur... more »es complete a perfect planetary picture.« less