AIDS (Acquired Immunodeficiency Syndrome) is a huge health problem. Millions of people around the world are affected by AIDS each day. Many children grow up without parents because they died of AIDS. Many parents must live with the fact that their kids with AIDS will have very difficult lives. You hear about AIDS on TV and read about it online. But many people-kids and adults-don't understand much about AIDS. How do you catch HIV/AIDS? What...