Cold and flu season means stuffy noses and plenty of sneezes. CNN’s Meg Tirrell examines why your body produces so much mucus ...

President Donald Trump has worked to advance a flurry of policy priorities in the first week of his second term, while more Cabinet nominees work through the confirmation process. Follow live updates.

Images of Mars taken from orbit show thousands of mounds in a region sculpted by water billions of years ago. A robotic mission may investigate the area one day.