Think for a moment. Right now there are thousands of tiny microbes livingon the tip of your finger in a world that is so small that it can only be visited byusing a microscope. In this book we�ll show you how to visit this world and howto interact with these tiny creatures that call the tip of your finger home.The microscopic world was first visited in the late 1600s by the Dutch mer-chant and amateur scientist Antoni van Leeuwenhoek. He was able to see livingmicroorganisms by using a single-lens microscope. We�ve come a long waysince Van Leeuwenhoek�s first visit. Today scientists are able to see throughsome microbes and study the organelles that bring them to life..