Selena Gomez, who became sick due to complications from lupus, shared details of the life-saving kidney transplant she received from a friend. “I had arthritis. My kidneys were shutting down. My mentality was just to keep going,” she said on the NBC's Today Show.
After having surgery to remove blood clots from his brain, "Jeopardy!" host Alex Trebek will be taking medical leave from the show but said his recovery is going well and he hopes to be back “very soon.” The clots are a complication from hitting his head in a bad fall in October.
Gregor Mendel was an Austrian monk who discovered the basic principles of heredity through experiments in his garden. Mendel's observations became the foundation of modern genetics and the study of heredity, and he is widely considered a pioneer in the field of genetics.