What Teachers Should Know Lupus is a disease that causes the immune system to mistakenly work against the body's own tissues and attack healthy cells. Lupus can affect almost any organ. Symptoms of ...

Pneumocystis pneumonia (PCP) is a lung infection caused by a fungus. It's rare in healthy people, and usually affects those with a weak immune system. It's the most common infection diagnosed in ...

Need a science project, or just looking for something fun to do? These experiments reveal the way your body works. Check with a grown-up first because some will require help from an adult.

What Is Weaning? Weaning is when a baby moves from breastfeeding to other sources of nourishment. Weaning your baby is a process that takes patience and understanding from both you and your child.

For most kids, body odor is part of growing up. Kids start to have body odor around the time puberty starts and hormones change. Usually, this happens when females are 8–13 years old, and males are ...