Neptune's blue color is the result of a gas called methane in its atmosphere. Like the other gas planets, Neptune has rapid winds trapped in bands of latitude and large storms. Neptune's winds are the fastest in the solar system, reaching 2000 km /hour!
Traction Alopecia. Traction Alopecia is another common cause of thinning or shedding hair among teenagers, and it occurs when an unnatural amount of tension is applied to the hair for a prolonged period of time. The good news: Traction Alopecia is one of the few causes of hair loss in teens that is behavioral.
A handful of conditions -- including severe malnutrition caused by anorexia nervosa -- can cause growth stunting in teenagers. Severely malnourished children often suffer from delayed growth, although the incidence of stunting is highest in severely impoverished regions of the world and among very young children. However, nutrition-related growth stunting can occur under certain circumstances in the United States, even among older adolescents.