Take a fun, fact-filled trip back to Earth as it was 430 million years ago. Then, watch as continents drift and oceans take shape. Watch out as fish get toothier, plants stretch skywards, and bugs get bigger. Soon fish get feet and four-legged creatures stalk the planet. Here's the story of Earth in conversational text, informative illustrations, and humorous cartoons. Complete with time line, pronunciation guide, glossary, and index.