We examine Gulf War illnesses--which include the fatigue, joint pain, dermatitis, headaches, memory loss, blurred vision, diarrhea, and other symptoms reported by Gulf War veterans--in relation to other medically unexplained physical symptoms such as multiple chemical sensitivity, chronic...

While public health, medical, government, and community actors agree that there is a serious asthma epidemic, there is significant disagreement over the role of outdoor environmental factors in causing or triggering asthma. The outcome of these disputes is important because it substantially...