Learn some great facts you might not know, such as: your lungs contain almost 1500 miles of airways and over 300 million alveoli; every minute you breathe in 13 pints of air; plants are our partners in breathing–we use the oxygen and release carbon dioxide, but plants and trees use carbon dioxide and release oxygen. When people sneeze, cough and even breathe–germs go flying!

Look! Here's a Web site that will tell you everything that happens to the air in your body–from the moment you take a breath to the time you exhale. Your respiratory system