A relatively rare chemical reaction can turn people's pee purple.
Weight-loss surgery could treat severely obese children more effectively than lifestyle changes alone, pediatricians say.
Mounting research suggests that the average person doesn't actually reach a euphoric state after taking opioids.
Japan imported Ebola and other lethal viruses to prepare diagnostic test kits for the 2020 Olympics.
While playing a game, monkeys switched strategies each round, while humans stuck to a set of inefficient rules.
A study suggests that an improved diet can help relieve depressive symptoms, but an expert points out major weaknesses in the trial.
Ehlers-Danlos syndrome affects connective tissues in the body and can cause a wide array of symptoms.
Chilean officials are investigating a curious collection of burning objects that fell onto parts of the country last week.
Traces of metal in baby teeth point to distinct differences between children with and without neurodevelopmental disorders.
Detailed 3D images of embryos reveal that some muscles form and then vanish during early human development.