Scientists announced new findings about when Earth's oxygen 1st increased in the atmosphere. The results will help scientists search for life on other worlds.
NASA is conducting its first study of snowstorms in the eastern United States in 30 years, with the help of scientists, weather balloons, aircraft and more.
Scientists show how characteristics seen in the embryo of a dinosaur egg relate to birds found on Earth today. Baby Yingliang was curled like a bird in its egg.