How do magnets attract each other? World Book answers your questions about how things work

How do birds migrate from the north to the south? How do germs affect our bodies? What happened to the asteroid that created Crater Lake? We at World Book answer all of your questions related to how things work. Answer Me This, World Book answers questions about such topics as food, inventions, and sea creatures, too. We help you make sense of the world with informative and funny answers. Well . . . at least we think they are funny.