Carotenoids are found in colorful fruits and vegetables, from carrots and tomatoes to leafy greens. Learn which foods deliver the most and how to absorb them better.
Gamma-ray bursts release more energy than the sun will in its lifetime. Here's what they are, how powerful they get, and what one could mean for Earth.
Autoimmune enteropathy can be serious, but outcomes vary by age and treatment. Learn what affects prognosis and when the condition poses the greatest risk.