Urticaria, or hives, causes itchy welts that can appear anywhere on the body. Learn what triggers them, how they differ from angioedema, and how to find relief.
Gene editing could eliminate hereditary diseases, extend healthy lifespans, and reduce healthcare costs. Here's the science and ethics behind the case for designer babies.
Some molds can be life-threatening, but mostly for people with weakened immune systems. Learn which species pose real risks and how to protect yourself.